Patent application number | Description | Published |
20090312517 | PROCESS FOR PREPARING LONG-CHAIN POLYMETHYLENE HALIDE TELOMERS - A process comprises combining in a batchwise, semi-continuous, or continuous manner, or a combination thereof, in the presence of at least one free radical initiator, and at a temperature sufficient to cause the initiator to fragment to form free radicals, (a) at least one telogen selected from (1) fluoroalkyl halides that comprise at least one halomethylene moiety (—CHX—) and, optionally, at least one non-fluorine heteroatom, and (2) perfluoroalkyl halides that comprise at least one halofluoromethylene moiety (—CFX—) and at least one non-halogen heteroatom, the halides being selected from iodides and bromides; and (b) ethylene; the telogen and the ethylene being combined in total amounts such that the number of moles of ethylene per mole of telogen is at least about 4. | 12-17-2009 |
20100093925 | LONG-CHAIN POLYMETHYLENE HALIDE TELOMERS - A composition comprises a distribution of telomers of ethylene and at least one fluoroalkyl or perfluoroalkyl halide, the telomers comprising at least one polymethylene segment (—(CH | 04-15-2010 |
20100171929 | DRY ERASABLE PROJECTION ARTICLE AND SYSTEM - A communication article and system comprising a writing member having a dry erasable front surface and a projection member is disclosed. The projection member includes an asymmetric optical diffuser that scatters light in a first direction with a first viewing angle A | 07-08-2010 |
20100310875 | HARDCOATS COMPRISING PERFLUOROPOLYETHER POLYMERS WITH POLY(ALKYLENE OXIDE) REPEAT UNITS - Presently described are articles, such as optical displays and protective films, comprising a (e.g. light transmissive) substrate having a surface layer comprising the reaction product of a mixture comprising a non-fluorinated binder precursor (e.g. of a hardcoat composition) and at least one polymerizable perfluoropolyether polymer. The resulting cured surface layer can advantageously exhibit low lint attraction in combination with low surface energy. Also described are one-step and two-step methods of synthesizing perfluoropolyether polymers having polymerizable ethylenically unsaturated groups. | 12-09-2010 |
20100331487 | SURFACE TREATMENT PROCESS AND TREATED ARTICLE - A surface treatment process comprises (a) providing at least one substrate having at least one major surface; (b) combining (1) at least one curable oligomeric or polymeric polysilazane comprising at least one chemically reactive site, and (2) at least one fluorochemical compound comprising (i) at least one organofluorine or heteroorganofluorine moiety that comprises at least about six perfluorinated carbon atoms, and (ii) at least one functional group that is capable of reacting with the polysilazane through at least one of the chemically reactive sites; (c) allowing or inducing the polysilazane and the fluorochemical compound to react to form at least one curable organofluorine-modified polysilazane; (d) applying the curable organofluorine-modified polysilazane or its precursors to at least a portion of at least one major surface of the substrate; and (e) curing the curable organofluorine-modified polysilazane to form a surface treatment. | 12-30-2010 |
20100331498 | COMPOSITION AND PROCESS FOR PREPARING CURABLE ORGANOFLUORINE-MODIFIED POLYSILAZANES, AND POLYSILAZANES PREPARED THEREBY - A composition for preparing curable organofluorine-modified polysilazanes comprises
| 12-30-2010 |
20120071626 | FLUORINATED AROMATIC BIS(ACYL)-CONTAINING COMPOUNDS AND POLYESTERS PREPARED THEREFROM - A fluorinated bis(acyl)-containing compound of Formula (I), where R | 03-22-2012 |
20120252997 | FLUORINATED ARYLENE-CONTAINING COMPOUNDS, METHODS, AND POLYMERS PREPARED THEREFROM - Fluorinated arylene-containing compounds and fluorinated polymers formed from fluorinated arylene-containing compounds, and methods are described. Fluorinated polymers formed from fluorinated arylene-containing compound can be used to provide a low energy surface. | 10-04-2012 |
20120259088 | COPOLYMERS WITH PERFLUOROPOLYETHER SEGMENT AND MULTIPLE AMINOOXALYLAMINO GROUPS - Copolymers containing at least one perfluoropolyether segment and multiple aminooxalylamino groups are described. Methods of making the copolymers are also described. The copolymers can be prepared by reacting an oxalylamino-containing compound and an amine compound having at least two primary amino groups, at least two secondary amino groups, or at least one primary amino group plus at least one secondary amino group. | 10-11-2012 |
20120264890 | COPOLYMERS WITH PERFLUOROPOLYETHER SEGMENT AND POLYDIORGANOSILOXANE SEGMENT - Copolymers containing at least one perfluoropolyether segment and at least one polydiorganosiloxane segments are described. The copolymers further contain multiple aminooxalylamino groups that link the various segments together. Methods of making the copolymers are also described. | 10-18-2012 |
20120289736 | PERFLUOROPOLYETHER-CONTAINING COMPOUNDS WITH OXALYLAMINO GROUPS - Compounds containing at least one perfluoropolyether segment and at least two oxalylamino groups as well as methods of making these compounds are described. The compounds can be polymeric materials or can be used in the preparation of various copolymeric materials by reaction with compounds having at least two primary or secondary amino groups. | 11-15-2012 |
20130101840 | CURABLE POLYSILOXANE COATING COMPOSITION - A curable composition comprises (a) at least one polydiorganosiloxane, fluorinated polydiorganosiloxane, or combination thereof comprising reactive silane functionality comprising at least two hydroxysilyl moieties; (b) at least one polydiorganosiloxane, fluorinated polydiorganosiloxane, or combination thereof comprising reactive silane functionality comprising at least two hydrosilyl moieties; and (c) at least one base selected from amidines, guanidines, phosphazenes, proazaphosphatranes, and combinations thereof; wherein at least one of the components (a) and (b) has an average reactive silane functionality of at least three. | 04-25-2013 |
20130101841 | CURABLE-ON-DEMAND POLYSILOXANE COATING COMPOSITION - A curable composition comprises (a) at least one polydiorganosiloxane, fluorinated polydiorganosiloxane, or combination thereof comprising reactive silane functionality comprising at least two hydroxysilyl moieties; (b) at least one polydiorganosiloxane, fluorinated polydiorganosiloxane, or combination thereof comprising reactive silane functionality comprising at least two hydrosilyl moieties; and (c) at least one photoactivatable composition that, upon exposure to radiation, generates at least one base selected from amidines, guanidines, phosphazenes, proazaphosphatranes, and combinations thereof; wherein at least one of the components (a) and (b) has an average reactive silane functionality of at least three. | 04-25-2013 |
20130102728 | CURABLE COMPOSITION COMPRISING DUAL REACTIVE SILANE FUNCTIONALITY - A curable composition comprises (a) at least one inorganic or organic compound comprising reactive silane functionality comprising at least one hydrosilyl moiety; (b) at least one inorganic or organic compound comprising reactive silane functionality comprising at least one hydroxysilyl moiety, the hydroxysilyl moiety optionally being generated in situ by hydrolysis of at least one hydrosilyl moiety; and (c) at least one base selected from amidines, guanidines, phosphazenes, proazaphosphatranes, and combinations thereof; with the proviso that, when component (a) is an organic polymer, then component (b) is different from component (a) and is not generated in situ by hydrolysis of component (a). | 04-25-2013 |
20130178553 | CURABLE-ON-DEMAND COMPOSITION COMPRISING DUAL REACTIVE SILANE FUNCTIONALITY - A curable composition comprises (a) at least one inorganic or organic compound comprising reactive silane functionality comprising at least one hydrosilyl moiety; (b) at least one inorganic or organic compound comprising reactive silane functionality comprising at least one hydroxysilyl moiety, the hydroxysilyl moiety optionally being generated in situ by hydrolysis of at least one hydrosilyl moiety; and (c) at least one photoactivatable composition that, upon exposure to radiation, generates at least one base selected from amidines, guanidines, phosphazenes, proazaphosphatranes, and combinations thereof; with the proviso that, when component (a) is an organic polymer, then component (b) is different from component (a) and is not generated in situ by hydrolysis of component (a). | 07-11-2013 |
20130178595 | PROCESS FOR PREPARING SHELF-STABLE CURABLE POLYSILAZANES, AND POLYSILAZANES PREPARED THEREBY - A process for preparing curable oligomeric and/or polymeric polysilazanes comprises (a) forming at least one dihalosilane-base adduct by reacting at least one dihalosilane with at least one base; (b) optionally, combining at least one dihalosilane-base adduct and at least one organodihalosilane; and (c) carrying out ammonolysis of at least one dihalosilane-base adduct or of the resulting combination of at least one dihalosilane-base adduct and at least one organodihalosilane; with the proviso that the base (1) is used for the dihalosilane-base adduct formation in a limited amount that is less than or equal to twice the stoichiometric amount of silicon-halogen bonds in the dihalosilane or (2) is used for the dihalosilane-base adduct formation in excess of this limited amount and, prior to the ammonolysis, the total amount of the resulting reacted and unreacted base is reduced to no more than this limited amount. | 07-11-2013 |
20130220682 | Method of Reducing Electromigration of Silver and Article Made Thereby - A method includes: providing a silver-containing conductive member disposed on a portion of a surface of chemically-strengthened glass, wherein the conductive member comprises silver; disposing a layer comprising a curable polysilazane onto at least a portion of the conductive member and at least a portion of the surface of the chemically-strengthened glass adjacent to the conductive member; and curing the curable polysilazane. Electronic devices prepared according to the method are also disclosed. | 08-29-2013 |
20130221393 | LIGHT EMITTING DIODE COMPONENT COMPRISING POLYSILAZANE BONDING LAYER - In one embodiment, a semiconductor component, such as a wavelength converter wafer, is described wherein the wavelength converter is bonded to an adjacent inorganic component with a cured bonding layer comprising polysilazane polymer. The wavelength converter may be a multilayer semiconductor wavelength converter or an inorganic matrix comprising embedded phosphor particles. In another embodiment, the semiconductor component is a pump LED component bonded to an adjacent component with a cured bonding layer comprising polysilazane polymer. The adjacent component may the described wavelength converter(s) or another component comprised of inorganic material(s) such as a lens or a prism. Also described are methods of making semiconductor components such as wavelength converters and LED's. | 08-29-2013 |
20130244028 | EXTRUDABLE URETHANE RELEASE COATING - Described herein is a release material comprising: a blend comprising: releasing agent comprising a urethane polymer derived from a polyvinyl polymer containing active hydroxyl groups and an aliphatic isocyanate; and a carrier polymer, wherein more than 50% by weight of the carrier polymer is non-olefinic, and articles thereof. | 09-19-2013 |
20130264061 | METHOD FOR TREATING HYDROCARBON-BEARING FORMATIONS WITH FLUORINATED AMINE - A method of modifying a surface of a hydrocarbon-bearing formation is disclosed. The method includes contacting the surface of the hydrocarbon-bearing formation with a fluorinated amine, and the surface of the hydrocarbon-bearing formation includes a carbonate. The method can typically include introducing a treatment composition comprising solvent and at least one of the fluorinated amine or a salt thereof into the carbonate hydrocarbon-bearing formation. Hydrocarbon-bearing formations treated according to the method are also disclosed. Certain fluorinated amines useful for treating carbonate hydrocarbon-bearing formations and methods of making them are also disclosed. | 10-10-2013 |
20140094580 | HARDCOATS COMPRISING PERFLUOROPOLYETHER POLYMERS WITH POLY(ALKYLENE OXIDE) REPEAT UNITS - Presently described are articles, such as optical displays and protective films, comprising a (e.g. light transmissive) substrate having a surface layer comprising the reaction product of a mixture comprising a non-fluorinated binder precursor (e.g. of a hardcoat composition) and at least one polymerizable perfluoropolyether polymer. The resulting cured surface layer can advantageously exhibit low lint attraction in combination with low surface energy. Also described are one-step and two-step methods of synthesizing perfluoropolyether polymers having polymerizable ethylenically unsaturated groups. | 04-03-2014 |
20140163250 | FLUORINATED AROMATIC BIS(ACYL)-CONTAINING COMPOUNDS AND POLYESTERS PREPARED THEREFROM - A fluorinated bis(acyl-containing compound and a fluorinated polyester formed from the fluorinated diacyl are described. More particularly, the fluorinated diacyl has an aromatic ring bonded to two acyl groups plus at least one third group that contains a perfluoroalkylsulfonamido group. The fluorinated polyesters formed from the fluorinated diacyl-containing compound can be used to provide a low energy surface with a relatively low refractive index compared to many other polyesters. | 06-12-2014 |
20140329012 | CLEANABLE ARTICLES AND METHODS FOR MAKING AND USING SAME - Cleanable articles having overcoats with hydrophilic front surfaces and which are siloxane-bonded to an underlying body member. Also, methods of making and using such articles. | 11-06-2014 |
20140342166 | CURABLE POLYSILOXANE COMPOSITION - A curable composition comprises (a) at least one polyorganosiloxane, fluorinated polyorganosiloxane, or combination thereof comprising reactive silane functionality comprising at least two hydroxysilyl moieties; (b) at least one polyorganosiloxane, fluorinated polyorganosiloxane, or combination thereof comprising reactive silane functionality comprising at least two hydrosilyl moieties; and (c) a catalyst composition comprising (1) at least one base selected from amidines, guanidines, phosphazenes, proazaphosphatranes, and combinations thereof, and (2) at least one Lewis acid; wherein at least one of the components (a) and (b) has an average reactive silane functionality of at least three. | 11-20-2014 |
20140349125 | CURABLE-ON-DEMAND POLYSILOXANE COATING COMPOSITION - A curable composition comprises (a) at least one polyorganosiloxane, fluorinated polyorganosiloxane, or combination thereof comprising reactive silane functionality comprising at least two hydroxysilyl moieties; (b) at least one polyorganosiloxane, fluorinated polyorganosiloxane, or combination thereof comprising reactive silane functionality comprising at least two hydrosilyl moieties; and (c) at least one photoactivatable composition comprising at least one organoborate salt selected from tetraarylborate, triarylorganoborate, diaryldiorganoborate, and aryltriorganoborate salts (and combinations thereof) of at least one base selected from amidines, guanidines, phosphazenes, proazaphosphatranes, and combinations thereof; wherein at least one of the components (a) and (b) has an average reactive silane functionality of at least three. | 11-27-2014 |
20140377494 | Curable Polysiloxane Compositions and Pressure Sensitive Adhesives Made Therefrom - Curable compositions include at least one polydiorganosiloxane with at least two hydroxysilyl moieties, at least one hydroxyl-functional polyorganosiloxane resin, and at least one photoactivatable composition that, upon exposure to radiation, generates at least one base selected from amidines, guanidines, phosphazenes, proazaphosphatranes. The curable compositions can be coated on substrates and cured to form coatings, including pressure sensitive adhesives. | 12-25-2014 |
20140378608 | CURABLE POLYSILOXANE COATING COMPOSITION - A curable composition comprises (a) at least one polyorganosiloxane, fluorinated polyorganosiloxane, or combination thereof comprising reactive silane functionality comprising at least two hydroxysilyl moieties; (b) at least one polyorganosiloxane, fluorinated polyorganosiloxane, or combination thereof comprising reactive silane functionality comprising at least two hydrosilyl moieties; and (c) a catalyst composition comprising at least one carbene; wherein at least one of the components (a) and (b) has an average reactive silane functionality of at least three. | 12-25-2014 |
20150010748 | BASIC COMPOSITIONS INCLUDING INORGANIC OXIDE NANOPARTICLES AND AN ORGANIC BASE, COATED SUBSTRATES, ARTICLES AND METHODS - Basic coating compositions including inorganic oxide nanoparticles and an organic base are described. Methods of coating a substrate with the coating compositions, coated substrates prepared using the methods, and articles that include the coated substrates are also disclosed. | 01-08-2015 |
20150057428 | COPOLYMERS WITH PERFLUOROPOLYETHER SEGMENT AND MULTIPLE AMINOOXALYLAMINO GROUPS - Copolymers containing at least one perfluoropolyether segment and multiple aminooxalylamino groups are described. Methods of making the copolymers are also described. The copolymers can be prepared by reacting an oxalylamino-containing compound and an amine compound having at least two primary amino groups, at least two secondary amino groups, or at least one primary amino group plus at least one secondary amino group. | 02-26-2015 |
20150141563 | HYDROPHOBIC AND OLEOPHOBIC COATING COMPOSITION - The present disclosure provides a hydrophobic and oleophobic coating composition, which comprises the following components based on weight percentage: 0.1-15% of a fluorosiloxane, 1-30% of a polyacrylic resin, 0.1-15% of a silane coupler, 33-98% of an organic solvent, and 0.05-15% of an acid. By combining the polyacrylic resin and the fluorosiloxane which exhibits hydrophobic property, the present composition not only provides good hydrophobic property but also ensures durable hydrophobic property of the coating with the help of good adhesion of polyacrylic resin. The coating composition can form hard coating which has high glossiness and high transparency under relatively low temperatures and has a contact angle of 115-120°. This coating composition can be used on surfaces of substrates, such as automotive paints, metal, plastic and glass, and it can retain long lasting hydrophobic and oleophobic property even placed outdoors for several months, and it can also prevent the surface of the substrate from being scratched. | 05-21-2015 |
20150247007 | BLOCK COPOLYMER COMPRISING POLYORGANOSILOXANE BLOCK AND POLYOLEFIN BLOCK - Presently described are block copolymers suitable for use as a low adhesion backsize (“LAB”) coating. The block copolymers comprise at least one polyorganosiloxane block and at least one polyolefin block. The polyolefin block is semi-crystalline having a melt point of at least 110° C. The block copolymer typically has the structure: A[-L-B] | 09-03-2015 |
20150252139 | POLYDIORGANOSILOXANE POLYURETHANE - Described herein is a polydiorganosiloxane polyurethane, linear, block copolymer and methods of making thereof. The copolymers comprise soft segments that are polydioranosiloxane units and hard segments which are polyurethane residues. | 09-10-2015 |
20150252215 | LAMINATES AND ARTICLES COMPRISING A BLOCK COPOLYMER COATING COMPRISING POLYORGANOSILOXANE AND POLYOLEFIN - The invention relates to intermediate laminates and articles comprising a low adhesion backsize coating. The laminate comprises a substrate having a major surface and opposing surface and a coating comprising a block copolymer disposed on a major surface of the substrate wherein the block copolymer comprises a polyorganosiloxane block and a polyolefin block, the polyolefin block having a melt point of at least 110° C. Also described are medical dressings comprising such laminate. | 09-10-2015 |
20150321498 | TRANSPARENT NOTE SHEET AND METHOD FOR MANUFACTURING THE SAME - A note sheet comprising: (1) a substrate having a first main face and a second main face; (2) a writing receptive layer on the first main face of the substrate, the writing receptive layer having an exposed face or writing surface having a fine relief structure; and (3) at least one segment of repositionable pressure-sensitive adhesive layer on at least a portion of the second main face; wherein the substrate and writing receptive layer having a visible transmittance of at least about 80% and a haze of not more than about 60%. Also a method for making such sheets. | 11-12-2015 |
Patent application number | Description | Published |
20100186815 | Photovoltaic Device With Improved Crystal Orientation - A photovoltaic device can include a semiconductor absorber layer with improved cadmium telluride orientation. | 07-29-2010 |
20100288354 | CADMIUM STANNATE TCO STRUCTURE WITH DIFFUSION BARRIER LAYER AND SEPARATION LAYER - A photovoltaic device can include a transparent conductive oxide layer adjacent to a substrate and one or more barrier layers, which can include a silicon oxide or a silicon nitride. | 11-18-2010 |
20100288355 | SILICON NITRIDE DIFFUSION BARRIER LAYER FOR CADMIUM STANNATE TCO - A photovoltaic device can include a transparent conductive oxide layer adjacent to a substrate and a barrier layer, which can include a silicon-containing material. | 11-18-2010 |
20100319775 | Method and Apparatus for Annealing a Deposited Cadmium Stannate Layer - A method for manufacturing a multi-layered structure can include annealing a stack, where the annealing can include heating the stack in the presence of an inert gas, and where the stack includes a layer including cadmium and tin. | 12-23-2010 |
20110227131 | PHOTOVOLTAIC DEVICE WITH CRYSTALLINE LAYER - A method for manufacturing a multilayered structure may include forming a transparent conductive oxide layer including cadmium stannate adjacent to a substrate and annealing the structure in an annealing environment including a reducing agent at a temperature greater than 500 degrees C. to crystallize the cadmium stannate. | 09-22-2011 |
20110240117 | PHOTOVOLTAIC DEVICE WITH TRANSPARENT CONDUCTING LAYER - A method of manufacturing structure may include forming a layer including cadmium and tin adjacent to a substrate, annealing the layer in a first annealing environment including a reducing agent, then annealing the layer in a second annealing environment including nitrogen. | 10-06-2011 |
20120037201 | PHOTOVOLTAIC DEVICE WITH OXIDE LAYER - A method of manufacturing a photovoltaic device may include concurrently transforming a transparent conductive oxide layer from a substantially amorphous state to a substantially crystalline state and forming one or more semiconductor layers. | 02-16-2012 |
20120045867 | ANTI-REFLECTIVE PHOTOVOLTAIC MODULE - An anti-reflective surface on a photovoltaic can reduce optical reflection. | 02-23-2012 |
20120060923 | PHOTOVOLTAIC DEVICE BARRIER LAYER - A structure including a barrier layer adjacent to a substrate, a transparent conductive oxide layer adjacent to the barrier layer, and a buffer layer adjacent to the transparent conductive oxide layer. In the structure, the barrier layer includes a silicon aluminum oxide, the transparent conductive oxide layer includes cadmium and tin and the buffer layer comprises tin oxide. A photovoltaic device that includes the described structure along with a semiconductor window layer adjacent to the buffer layer and a semiconductor absorber layer adjacent to the semiconductor window layer. Methods of manufacturing a photovoltaic structure are also disclosed, as well as a sputter target for use in the manufacture of a photovoltaic device and methods of manufacturing the same. | 03-15-2012 |
20120132261 | CADMIUM STANNATE SPUTTER - A structure includes a barrier layer which can include a silicon aluminum oxide, and a transparent conductive oxide layer which can include a layer of cadmium and tin. | 05-31-2012 |
20120247553 | PHOTOVOLTAIC DEVICE WITH BUFFER LAYER - A method of manufacturing a structure can include forming a buffer layer on a transparent conductive oxide layer, where the buffer layer includes a layer including zinc and tin, and the transparent conductive oxide layer includes a layer including cadmium and tin. | 10-04-2012 |
20130153031 | PHOTOVOLTAIC DEVICE WITH AN ANTI-REFLECTIVE SURFACE AND METHODS OF MANUFACTURING SAME - A photovoltaic device comprising a substrate which has a porous first surface and a transparent conductive oxide layer located on a second surface opposite the first surface. A method of manufacturing the device is also described. | 06-20-2013 |
Patent application number | Description | Published |
20110261833 | Method and Device for MIMO Transmission in High Speed Packet Access Evolution System - A method and device for MIMO transmission in high speed packet access evolution system, the method includes: determining each signaling in high speed shared information channel HS-SICH; duplexing all signaling as HS-SICH signaling; carrying channel coding for HS-SICH signaling, and mapping to the allocated channelization code resource. | 10-27-2011 |
20120001699 | SYSTEM AND METHOD FOR EXTENDING VCO OUTPUT VOLTAGE SWING - Voltage controlled oscillator (VCO) has been widely used in radio frequency communication systems. In a typical VCO implementation, a pair of directly cross-coupled MOS transistors is used as a switching device and an LC resonant circuit is used to tune the desired frequency. The direct cross coupling of the MOS transistor pair will result in limited output voltage swing since a large swing may cause the MOS transistors into a linear region to increase phase noise. The VCO system to increase the output voltage swing according to one embodiment of the present invention includes DC-blocking capacitors to avoid direct cross coupling of the MOS pair. The VCO further includes circuit to provide bias for the gate voltage of the MOS pair. A method for increasing the output voltage swing is disclosed for a VCO system having LC resonant circuit. The method includes providing DC-blocked cross coupling from the drains of the cross-coupled transistor pair to the gates of the cross-coupled transistor pair. The method also includes providing an offset voltage to the gates of the cross-coupled transistor pair to reduce the maximum gate-to-drain voltage of a cross-coupled NMOS transistor pair or maximum drain-to-gate voltage of a cross-coupled PMOS transistor pair so that the cross-coupled transistor pair will work in a saturation region when the output voltage swing is increased. | 01-05-2012 |
20120025921 | Low Noise VCO Circuit Having Low Noise Bias - A low noise VCO circuit for an LC VCO circuit comprising MOS varactors is disclosed. The LC VCO circuit usually comprises an LC tuning circuit coupled with a pair of cross-coupled transistors used as a negative impedance element. A pair of varactors is used to provide fine tuning by applying a control voltage to the varactor. Since the varactor is also coupled to the pair of cross-coupled transistor, the process variation and temperature change may affect the bias voltage coupled to the pair of varactors. Therefore, a bias circuit usually is used to alleviate the impact of process variation and temperature change associated with the pair of transistor. Nevertheless, the bias voltage typically is implemented by providing a current flowing through a resistor, wherein the current is generated by a current source. The noise associated with the current source will affect the performance of the VCO circuit. A low noise VCO circuit is disclosed which utilizes a low noise bias circuit. The low noise bias circuit comprises a current source, a load device and a voltage divider wherein the load device is coupled to the voltage divider in parallel. The load device may be implemented using a bipolar transistor or a diode-connected MOS device. | 02-02-2012 |
20120243448 | METHOD,SYSTEM AND DEVICE FOR SENDING UPLINK FEEDBACK INFORMATION - A method and device for acquiring user equipment duplex mode information are disclosed by the present invention, wherein, the method includes: the user equipment establishes a radio resource control connection with a base station, and reports the user equipment duplex mode information when establishing the radio resource control connection. With the technical scheme provided in the embodiments of the present invention, the network side acquires the duplex mode of the user equipment. | 09-27-2012 |
20130190028 | Method, Device and System for Implementing Frequency Point Switch Based on CR - The present application relates to of the communication field and discloses a method, device and system for implementing frequency point shift based on CR. The method comprises: determining, by a cognitive base station, a candidate working frequency point for UE deployed in a cognitive frequency band; then sending to the UE broadcast information which at least carries the candidate working frequency point and instructing the UE to shift from the working frequency point currently used thereby to the candidate working frequency point by way of a frequency point shift command. In this way, the UE deployed in the cognitive frequency band can achieve frequency point shift quickly and accurately according to the instruction from the cognitive base station when an authorized user accesses the working frequency point currently used by the UE, effectively avoiding interference to the authorized user and thereby ensuring the service performance and service continuity of the system. The present application also discloses a corresponding device and system. | 07-25-2013 |
20140045500 | Methods for Handover Configuration - The dynamic determination of a handover trigger for triggering handover of a mobile terminal in a wireless network from a source base station to a target base station is based on one or more Key Performance Indicators (KPIs). Each KPI indicates a quality of wireless services provided by the wireless network responsive to a particular handover trigger. If an obtained parameter that indirectly or directly impacts handover performance passes a corresponding performance test, the mobile terminal selects the handover trigger based on the KPIs. If the parameter fails the corresponding performance test, the source base station selects the handover trigger based on the KPIs. | 02-13-2014 |
20140120970 | METHOD, SYSTEM AND DEVICE FOR TRIGGERING AND PERFORMING SPECTRUM SENSING - The embodiments of the present application relate to the technical field of wireless communications, and in particular to a method, system and device for triggering and performing spectrum sensing, used for solving the problem in the prior art that if the sensing period is set too long, a decline of service quality between an authorization system and a cognitive system or even a network paralysis will be caused due to interference; and if the sensing period is set too short, an increase in power consumption of devices and a waste of spectrum resources will be caused. The method for performing spectrum sensing in the embodiments of the present application includes: a sensing node judging whether or not the channel quality has declined to the requirement for performing in-band spectrum sensing; and after determining that the channel quality has declined to the requirement for performing in-band spectrum sensing, the sensing node performing in-band spectrum sensing. By way of applying the embodiments of the present application, the problems of decline of service quality between an authorization system and a cognitive system or even a network paralysis due to interference caused by setting the sensing period too long, or an increase in power consumption of devices and a waste of spectrum resources caused by setting period too short, can be avoided. | 05-01-2014 |
20140185653 | METHOD AND SYSTEM FOR OBTAINING AN IDLE SPECTRUM - The present disclosure provides a method and an apparatus for obtaining an idle spectrum. The method includes: obtaining, by a central management unit, configuration information of a transmitter of an authorized system, and obtaining geographic location information of candidate sense nodes; selecting, by the central management unit, sense nodes from the candidate sense nodes according to the configuration information and the geographic location information, and informing the selected sense nodes to perform spectrum sensing; and receiving, by the central management unit, sensing results of the selected sense nodes, and obtaining information of an idle spectrum according to the sensing results. | 07-03-2014 |
20140323096 | METHOD AND SYSTEM FOR SPECTRUM HANDOVER IN COGNITIVE RADIO NETWORKS - Various examples provide a method and a system for spectrum handover in cognitive radio (CR) systems. According to the method, after detecting a user of an authorized system appears at a current working frequency, the base station generates a spectrum handover command and sends the spectrum handover command via a channel identified by the CR DWNDI to instruct the UEs in the cell to perform spectrum handover according to the spectrum handover command. | 10-30-2014 |
20150021251 | DOUBLE-LAYER PERSULFATE SUSTAINED-RELEASE MATERIAL AND ITS PREPARATION METHOD - The present invention involves a persulfate-release material used in the filler of permeable reactive barrier (PRB). This material presents double-layered structure characteristic: inner- and outer-layers are consisted of persulfate, cement, sand and water with different mass ratio. Two different types of moulds are used for the regulation of the shape-of the two-layer structures, which guarantees the stability and reproducibility of its structures and properties. During the whole released process, the released rate become more uniform and stable by the use of this material. During the whole service period, the change of the released rate is very slow, and the service lifetime can be 1-10 years. This invention can both reduce the initial released rate and improve the later released rate, and thus the whole released rate can be more uniform, which can be an important method to promote the efficiency of the persulfate toward engineering application. | 01-22-2015 |
20150139049 | METHOD AND DEVICE FOR SPECTRUM SENSING IN COGNITIVE RADIO SYSTEM - The cognitive radio cell acquires a scheme dividing frequency band resources into a number of sub-bands and corresponding silent period time frequency pattern, when performing silence on the sub-band which the cognitive radio cell works on according to the silence period time position of each sub-band defined in the silent period time frequency pattern, spectrum sensing on corresponding sub-band is implemented by radio spectrum sensing system or cognitive radio cell. | 05-21-2015 |
20150163080 | METHOD AND DEVICE FOR DETERMINING AVAILABLE SPECTRUMS - A method and device for determining available spectrums is disclosed in embodiments of the present invention. By applying the technical solution of the embodiments of the present invention, with consideration on the bi-directionality of the interference between wireless communication systems, when introduction of the cognitive system is required, the corresponding frequency will be determined as an available frequency only in the case the incumbent system and the cognitive system can be simultaneously guaranteed to meet the corresponding coexistence criterion among the corresponding frequency and adjacent frequencies thereof, thus ensuring that the determined available frequency band guarantees that the normal operation of the incumbent system is not interfered by the cognitive system while ensuring that the newly-introduced cognitive system can also operate normally without interference of the incumbent system, thereby improving the communication quality of the wireless communication systems. | 06-11-2015 |
20150181438 | METHOD AND DEVICE FOR DETERMINING AND ASSISTING IN DETERMINING BACK-UP FREQUENCY IN COGNITIVE RADIO SYSTEM - Disclosed are a method and device for determining and assisting in determining a back-up frequency in a cognitive radio system. A first cognitive system shares the wireless communication spectrum resources of an incumbent system, and the method thereof for determining a back-up frequency comprises: through a terminal, a first cognitive system obtaining a back-up frequency of a second cognitive system which has overlapping coverage in a target area in an overlapping coverage area; and according to the back-up frequency of the second cognitive system in the overlapping coverage area, selecting from the wireless communication spectrum resources at least one frequency as a back-up frequency in the target area. When determining the back-up frequency, the first cognitive system can refer to the back-up frequency of the second cognitive system to conduct determination, thereby optimizing the system performance. | 06-25-2015 |
20150247018 | BIODEGRADATION OF PETROLEUM-BASED PLASTICS - The present disclosure generally relates to biological processes for degrading waste plastics and recycled plastics, and more specifically to novel isolated insects capable of degrading petroleum-based plastics, bacterial strains capable of degrading petroleum-based plastics, and microbial consortia including such strains. The present disclosure also relates to compositions including such strains and microbial consortia, and to methods of using such strains, microbial consortia, and insects. | 09-03-2015 |
20150344240 | PICK-AND-PLACE DEVICE OF GLASS SUBSTRATE - The present invention discloses a pick-and-place device of a glass substrate, comprises a bracket and a substrate holder, the substrate holder comprises a first support part, a second support part and a sliding part, the first support part is provided on the second support part by the sliding part, the first support part is capable of moving with respect to the second support part between a first position and a second position under the action of the sliding part, and when the first support part is located at the first position, the first support part integrally protrudes outward of the second support part, when the first support part is located at the second position, the first support part is integrally located right above the second support part. | 12-03-2015 |
20150382255 | Methods for Handover Configuration - The dynamic determination of a handover trigger for triggering handover of a mobile terminal in a wireless network from a source base station to a target base station is based on one or more Key Performance Indicators (KPIs). Each KPI indicates a quality of wireless services provided by the wireless network responsive to a particular handover trigger. If an obtained parameter that indirectly or directly impacts handover performance passes a corresponding performance test, the mobile terminal selects the handover trigger based on the KPIs. If the parameter fails the corresponding performance test, the source base station selects the handover trigger based on the KPIs. | 12-31-2015 |
20160057765 | DYNAMIC SPECTRUM ALLOCATION METHOD AND DYNAMIC SPECTRUM ALLOCATION DEVICE - The present disclosure provides a dynamic spectrum allocation method and a dynamic spectrum allocation device. In the method, a centralized node performs spectrum allocation and transmits a spectrum allocation result to each communication node, so that the communication node operates at a corresponding spectrum resource in accordance with the spectrum allocation result and performs statistics of communication quality measurement information. The centralized node receives the communication quality measurement information reported by the communication node, and determines whether or not it is required to trigger the spectrum re-allocation for the communication node in accordance with the communication quality measurement information about the communication node. When it is required to trigger the spectrum re-allocation, the centralized node re-allocates the spectrum for the communication node. | 02-25-2016 |
Patent application number | Description | Published |
20120094670 | Method and Arrangement in Wireless Communications Network - A method in a wireless terminal ( | 04-19-2012 |
20130005344 | USER EQUIPMENT, RADIO BASE STATION AND METHODS THEREIN FOR DETERMINING MOBILITY TRIGGER - A method in a user equipment for enabling a cell change of a connection of the user equipment from a first cell serving the user equipment to a second cell in a radio communications network includes obtaining a first cell size of the first cell and obtaining a second cell size of the second cell. The method also includes determining a mobility trigger to use based on at least the first cell size and/or the second cell size and determining whether a cell change is to be performed based on the mobility trigger. | 01-03-2013 |
20130210434 | METHODS AND DEVICES FOR ADJUSTING RESOURCE MANAGEMENT PROCEDURES IN HETEROGENEOUS COMMUNICATION NETWORKS - Devices and methods for adjusting resource management procedures in heterogeneous communication networks are disclosed. In one aspect, a method for adjusting radio resource management procedures in a mobile device communicating with a node operating in a cell in a heterogeneous communication network includes transmitting a first message to the node, the first message including a request for cell information, receiving a second message transmitted from the node, the second message including the requested cell information, measuring signal reception information, processing the received cell information and measured signal reception information to determine an adjustment to a radio resource management procedure, and adjusting the radio resource management procedure based on the determined adjustment. The first and second messages may be radio resource control (RRC) messages, such as RRC connection request and response messages. | 08-15-2013 |
20130210435 | METHODS AND DEVICES FOR ADJUSTING RESOURCE MANAGEMENT PROCEDURES IN HETEROGENEOUS COMMUNICATION NETWORKS BASED ON CELL INFORMATION - Devices and methods for adjusting resource management procedures in a mobile device communicating with a node operating in a cell in a heterogeneous communication network are disclosed. In one aspect, a method includes receiving a signal, including a reference signal, transmitted from the node during a predetermined time period, measuring signal reception information, including reference signal power values, at predetermined time intervals during the predetermined time period, measuring speeds of movement of the mobile device at the predetermined time intervals, determining a reference signal power variation value based on the variability of the measured reference signal power values, comparing the determined reference signal power variation value with a predetermined power threshold value for a given measured speed, determining cell information based on the comparison, determining an adjustment to a resource management procedure based on the determined cell information, and adjusting the resource management procedure based on the determined adjustment. | 08-15-2013 |
20130331103 | Apparatus and Method for Selecting HO Triggers - The disclosed solution dynamically selects a handover trigger for triggering handover of a mobile terminal in a wireless network from a source base station to a target base station based on one or more Key Performance Indicators (KPIs). Each KPI indicates a quality of wireless services provided by the wireless network responsive to a particular handover trigger. A trigger selection circuit selects one of multiple candidate triggers as the handover trigger based on a comparison between corresponding KPIs for different ones of the candidate triggers. | 12-12-2013 |
20140169500 | SYSTEM AND METHOD FOR COMMUNICATING INFORMATION IN A WIRLESS NETWORK - A method for receiving data transmitted wirelessly includes receiving information indicating a device type associated with a wireless communication device and, based on the device type associated with the wireless communication device, deciding to request information indicating a set of possible data values associated with transmissions from the wireless communication device. The method further includes receiving information indicating the set of possible data values and receiving a data transmission from the wireless communication device that comprises encoded data bits. Additionally, the method includes attempting to decode the data transmission using the set of possible data values. | 06-19-2014 |
20140213237 | SYSTEMS AND METHODS FOR DETERMINING A CONFIGURATION FOR A WIRELESS DEVICE - Systems and methods related to reducing a cost of operation and/or manufacture of wireless devices under appropriate conditions are disclosed. In one embodiment, a wireless node in a cellular communication network determines a configuration for a wireless device. In one particular embodiment, the wireless device is a Machine-Type Communication (MTC) device. The configuration includes at least one of a retransmission configuration and an advanced receiver configuration. The wireless device is then configured according to the configuration. In this way, the operation of the wireless device can be more cost efficient, particularly in terms of radio resource and energy efficiency, based on the conditions in which the wireless device is operated. | 07-31-2014 |
20140219192 | DEVICE-ANCHOR BASE STATIONS - Systems and methods are disclosed for providing efficient and reliable communication for wireless devices, e.g., Machine Type Communication devices, in a cellular communications network. In one embodiment, a network node of the cellular communications network identifies candidate device-anchor base stations, where the candidate device-anchor base stations are wireless devices that satisfy one or more predefined criteria for serving as a candidate device-anchor base station. The network node then effects selection of a device-anchor base station for a wireless device from the candidate device-anchor base stations such that communication between a serving base station of the wireless device and the wireless device is via the device-anchor base station. In this manner, communication between the wireless device and the serving base station of the wireless device is assisted by the device-anchor base station. | 08-07-2014 |
20140220970 | DEVICE-ANCHOR BASE STATION SELECTION AND DETECTION - Systems and methods are disclosed for providing efficient and reliable communication for wireless devices, e.g., machine type communication devices, in a cellular communications network. In one embodiment, a node of a cellular communications network is configured to select a device-anchor base station for a wireless device from candidate device-anchor base stations, where the candidate device-anchor base stations are wireless devices that satisfy one or more predefined criteria for serving as a candidate device-anchor base station and establish a connection between the wireless device and the device-anchor base station for the wireless device such that data transmissions between the wireless device and a base station of the cellular communications network are via the device-anchor base station. In this manner, communication between the wireless device and the base station is assisted by the device-anchor base station. | 08-07-2014 |
20140247747 | METHOD AND NODE RELATED TO CHANNEL ESTIMATION - A method comprises determining a first and a second sub-carrier associated with a channel, and multiplying a signal received on the first sub-carrier with a first number to form a first resulting signal. The first number multiplied with a known signal transmitted by a second transmitting node on the first sub-carrier equals a constant value. A signal received on the second sub-carrier is multiplied with a second number to form a second resulting signal. The second number multiplied with the known signal transmitted by the second transmitting node on the second sub-carrier equals the constant value. The second resulting signal is subtracted from the first resulting signal to obtain a signal for which interference from the second transmitting node is suppressed, and the channel is estimated based on the obtained signal. | 09-04-2014 |
20140293801 | SYSTEM AND METHOD FOR PROCESSING RECEIVED DATA IN A WIRELESS NETWORK - A method for communicating data within a wireless network includes receiving an indication of a measurement type from a wireless communication device and receiving a first wireless transmission pertaining to a first measurement performed by the wireless communication device. The method also includes, in response to the received transmission, obtaining a value of a second measurement of the measurement type. The second measurement is performed by a sensor associated with the base station. In addition, the method includes determining a value of the first measurement based on the received transmission and a value of a second measurement performed by the sensor associated with the base station. | 10-02-2014 |
20140334451 | METHODS AND DEVICES FOR ADJUSTING RESOURCE MANAGEMENT PROCEDURES IN HETEROGENEOUS COMMUNICATION NETWORKS - Devices and methods for adjusting resource management procedures in heterogeneous communication networks are disclosed. In one aspect, a method for adjusting radio resource management procedures in a mobile device communicating with a node operating in a cell in a heterogeneous communication network includes receiving a message that includes cell information transmitted from the node, measuring signal reception information, processing the received cell information and measured signal reception information to determine an adjustment to a resource management procedure, and adjusting the resource management procedure based on the determined adjustment. The first and second messages may be radio resource control (RRC) measurement control messages. | 11-13-2014 |
20140355455 | REFERENCE SIGNAL MEASUREMENT - The embodiments disclosed relates to a method and a network node that estimates a signal power and/or noise power of a received reference signal. The receiving node may operate in a communications system applying frequency division multiplexing. An assumption is that the channel frequency responses, on adjacent subcarriers of the communications system are equivalent or constant. The method comprising receiving a reference signal comprising a first reference signal from a first wireless terminal and a second reference signal from a second wireless terminal By using this assumption it is possible to combine first and second reference signal in order to estimating the signal power and/or noise power of a received reference signal without a conventional channel estimation technique. | 12-04-2014 |
20150117568 | ENABLING MODULATION MODE SELECTION - It is presented a method, performed in a network node, for enabling selection of modulation mode for a user equipment, UE. The method comprises: determining whether to provide higher order modulation, HOM, mode support for the UE; when HOM mode support is to be provided, selecting at least one HOM table for the UE; and when HOM mode support is not to be provided, selecting at least one non-HOM table for the UE. | 04-30-2015 |
20150208435 | Method and Arrangement for Acquiring Scheduling Information - A method executed in a first radio base station located in a first cell is provided for acquiring scheduling information associated with a second radio base station located in a neighboring cell, where the method comprises listening, via an air interface, to scheduling information transmitted, via a downlink control channel, from the second radio base station; decoding the received scheduling information, and providing the decoded scheduling information to an uplink receiver and/or uplink scheduler associated with the radio base station, such that the uplink receiver and/or uplink scheduler will be able to enhance its performance on the basis of the received scheduling information. An arrangement for executing the suggested method is also provided. | 07-23-2015 |
20150215913 | SYSTEMS AND METHODS UTILIZING AN EFFICIENT TBS TABLE DESIGN FOR 256QAM IN A CELLULAR COMMUNICATIONS NETWORK - Systems and methods relating to the use of a Transport Block Size (TBS) table that supports 256 Quadrature Amplitude Modulation (QAM) in a cellular communications network are disclosed. In some embodiments, a wireless device determines a TBS for a downlink transmission from a radio access node to the wireless device using a TBS table that supports both a first set of modulation schemes and 256QAM. The TBS table comprises a first set of rows from a preexisting TBS table that supports the first set of modulation schemes but not 256QAM and a second set of rows added to the preexisting TBS table to provide the TBS table, where the second set of rows substantially reuse TBS values from the first set of rows. The wireless device receives the downlink transmission from the radio access node according to the Downlink Control Information (DCI) and the TBS determined for the downlink transmission. | 07-30-2015 |
20150296503 | 256 QUADRATURE AMPLITUDE MODULATION USER EQUIPMENT CATEGORY HANDLING - According to some embodiments, a method in a wireless network element of transmitting a transport block comprises determining a modulation coding scheme for a transmission of the transport block; determining a category type of a wireless device that will transmit or receive the transport block; determining, using the category type of the wireless device, an encoding soft buffer size (N | 10-15-2015 |
20160143014 | CHANNEL ACCESS IN LISTEN BEFORE TALK SYSTEMS - Systems and methods relating to Listen before Talk (LBT) procedures suitable for, e.g., License Assisted Access (LAA) to an unlicensed frequency spectrum or Long Term Evolution Unlicensed (LTE-U) are disclosed. In some embodiments, a method of operation of a node of a cellular communications network comprises performing a LBT procedure for an observed channel in an unlicensed frequency spectrum. The LBT procedure defers at least one Clear Channel Assessment (CCA) slot such that the LBT procedure concludes at or near a desired starting point for a transmission. The at least one CCA slot comprises at least one of a first CCA slot of the LBT procedure, one or more intermediate CCA slots of the LBT procedure, and a final CCA slot of the LBT procedure. The method further comprises performing the transmission on the observed channel upon completion of the LBT procedure. | 05-19-2016 |