Patent application number | Description | Published |
20090252985 | THERMAL BARRIER COATING SYSTEM AND COATING METHODS FOR GAS TURBINE ENGINE SHROUD - A CMAS resistant coating system and method for a gas turbine engine component includes a thermally insulating coating having a dense vertically microcracked ceramic inner layer and a columnar-grained ceramic top layer. The inner layer may be applied by an air plasma spray technique. The top layer may be deposited by a physical vapor deposition technique. In an exemplary coating, a ratio of the thickness of the top layer to the thickness of the inner layer is greater than about 2 to 1. The layered coating may be particularly useful for the relatively thick coatings in gas turbine engine shroud applications. | 10-08-2009 |
20110151132 | Methods for Coating Articles Exposed to Hot and Harsh Environments - Methods for providing a coating system for reducing CMAS infiltration of substrates exposed to hot and harsh climates. Exemplary methods include optionally disposing a bond coat on a substrate, disposing an inner ceramic layer over the bond coat, or on the substrate in the absence of a bond coat, and disposing an outer alumina-containing layer including up to 50 percent by weight titania, using a high velocity oxygen fuel (HVOF) technique. Additional ceramic layers and alumina-containing layers may be provided to achieve a CMAS resistant coating. One or more suitable heat treatments may be utilized to phase-stabilize the alumina. The coating may be used for gas turbine engine components. Deposition techniques for the ceramic layer(s) may depend on the end use of the component. | 06-23-2011 |
20110151219 | Coating Systems for Protection of Substrates Exposed to Hot and Harsh Environments and Coated Articles - Coating system for reducing CMAS infiltration of substrates includes at least an inner ceramic layer and an outer alumina-containing layer. The outer layer includes up to 50 percent by weight titania. Additional ceramic layers and alumina-containing layers may be provided. The coating may be used for gas turbine engine components. Deposition techniques for the coating layers may depend on the end use of the component. Coated articles include a substrate, an optional bond coat on the substrate and a coating over the bond coat or on at least a portion of the substrate in the absence of a bond coat. The inner ceramic layer(s) exhibit a microstructure indicative of a deposition technique selected from thermal spray, physical vapor deposition, and suspension plasma spray, whereas the outer alumina-containing layer exhibits a microstructure indicative of suspension plasma spray, solution plasma spray, and a high velocity oxygen fuel spray. | 06-23-2011 |
Patent application number | Description | Published |
20080220172 | Sintering resistant, low conductivity, high stability thermal barrier coating/environmental barrier coating system for a ceramic-matrix composite (CMC) article to improve high temperature capability - In accordance with an embodiment of the invention, a thermal barrier coating (TBC) for inclusion in a thermal barrier coating/environmental barrier coating system (TBC/EBC system) for use on a silicon containing material substrate is provided. The TBC comprises a compound having a primary constituent portion and a stabilizer portion stabilizing said primary constituent. The primary constituent portion of the TBC comprises hafnia present in an amount of at least about 5 mol % of the primary constituent. The stabilizer portion of said thermal barrier coating comprises at least one metal oxide comprised of cations with a +2 or +3 valence present in the amount of about 10 to about 40 mol % of the thermal barrier coating. | 09-11-2008 |
20080292803 | Low conductivity, thermal barrier coating system for ceramic matrix composite (CMC) articles - In accordance with an embodiment of the invention, a thermal barrier coating for inclusion in a thermal barrier coating/environmental barrier coating system (TBC/EBC system) for use on a silicon based substrate is disclosed. The thermal barrier coating comprising up to about 9 mol percent of a stabilizer and up to 91 mol percent of primary oxide selected from the group consisting of zirconia, hafnia and mixtures thereof. The stabilizer comprises: a first metal oxide selected from the group consisting of yttria, calcia, ceria, scandia, magnesia, india and mixtures thereof, a second metal oxide of a trivalent metal atom selected from the group consisting of lanthana, gadolinia, neodymia, samaria, dysprosia, ytterbia, erbia, and mixtures thereof. The first metal oxide is in an amount of from about 3 to about 5 mol %, the second metal oxide is in an amount of from about 0.25 to about 6 mol %. | 11-27-2008 |
20100008770 | PROTECTION OF THERMAL BARRIER COATING BY A SACRIFICIAL COATING - According to an embodiment of the invention, an article of manufacture for use in a gas turbine engine is disclosed. The article comprises a part having a surface covered with a ceramic thermal barrier coating. The thermal barrier coating has an outer surface covered with a sacrificial phosphate coating, wherein the sacrificial phosphate coating reacts with contaminant compositions to prevent contaminant infiltration into the thermal barrier coating. | 01-14-2010 |
20100040476 | CORROSION COATING FOR TURBINE BLADE ENVIRONMENTAL PROTECTION - A gas turbine engine turbine blade comprising an airfoil section, a platform section, an under platform section, and a dovetail section, an exterior surface of the dovetail section comprising a shank exterior surface and a serrated exterior surface. The blade further comprises a silicon-modified diffusion aluminide layer a surface of a turbine blade section selected from the group consisting of an exterior surface of the under platform section, the exterior surface of the dovetail section, and combinations thereof, the silicon modified diffusion aluminide layer having a concentration of silicon at a surface of the silicon-modified diffusion aluminide layer in the range of about 1 weight percent to about 10 weight percent and a concentration of aluminum at the surface of the silicon modified diffusion aluminide layer in the range of about 5 weight percent to about 25 weight percent. | 02-18-2010 |
Patent application number | Description | Published |
20100021370 | Flotation Reagents and Flotation Processes Utilizing Same - Methods of enhancing recovery of value sulfide or precious minerals from an ore containing Mg-silicate, slime forming minerals, and/or clay by crushing the ore, grinding the ore, and subjecting the ground ore to a flotation process, in conjunction with the addition of at least one monovalent ion modifier enhancing agent and/or froth phase modifier agent to the ore, are provided herein. | 01-28-2010 |
20130092603 | Collector Compositions and Methods of Using the Same - Formulations for value mineral collector compositions composed of at least one first collector selected from an organic ammonium salt of an organic sulfur-containing acid; and at least one second collector selected from neutral collectors and/or organic ammonium salts of an organic sulfur-containing acids, such that the second collector is different from said first collector, are provided herein, along with methods for making and using same. | 04-18-2013 |
20130092604 | Froth Flotation Processes - Froth flotation processes that include adding a beneficiating amount of a value mineral collector composed of an organic ammonium salt of a sulfur-containing acid to at least one stage of a froth flotation process to recover value minerals from mineral ore bodies are disclosed herein. | 04-18-2013 |
20130092605 | Froth Flotation Processes - Froth flotation processes that include adding a beneficiating amount of a value mineral collector composed of an organic ammonium salt of a sulfur-containing acid to at least one stage of a froth flotation process to recover value minerals from mineral ore bodies are disclosed herein. | 04-18-2013 |
20140314641 | FLOTATION REAGENTS AND FLOTATION PROCESSES UTILIZING SAME - Methods of enhancing recovery of value sulfide and/or precious-metal minerals from an ore containing said minerals and a Mg-silicate, slime forming mineral, and/or clay, and which is subjected to a froth flotation process, by adding to one or more stage of the froth flotation process a froth phase modifier having a polymer containing one or more functional groups, and optionally a monovalent ion modifier enhancing agent, thereby enhancing recovery of a value sulfide mineral and/or a precious metal-bearing mineral. | 10-23-2014 |
Patent application number | Description | Published |
20090001947 | Low power optimized voltage regulator - Methods and apparatus relating to low power optimized voltage regulators are described. In one embodiment, a voltage regulator controller may cause leakage current from a load to drain a capacitor (e.g., coupled in parallel with the load) during a reduced power state. Other embodiments are also disclosed. | 01-01-2009 |
20090085200 | LOW LOSS RADIO FREQUENCY SIGNAL COMMUNICATION WITHIN A PACKAGE, A BOARD AND/OR A WAVE GUIDE - In some embodiments an integrated circuit package includes a coaxial arrangement of one or more ground via surrounding a signal via. The one or more ground via and the signal via extend through the package to allow transmission of signals between an integrated circuit and a board. Other embodiments are described and claimed. | 04-02-2009 |
20120167194 | CLIENT HARDWARE AUTHENTICATED TRANSACTIONS - In one embodiment a controller comprises logic to receive a request for a credential to authenticate a user for a transaction, in response to a determination that a credential which satisfies the request resides on a memory module, execute an authentication routine to authenticate a user of the controller, in response to a successful authentication, retrieve the credential from the memory module, and provide a token to certify the credential in response to the request. Other embodiments may be described. | 06-28-2012 |
20140074635 | VIRTUAL POINT OF SALE - In one embodiment a controller comprises logic to receive a payment request for a purchase transaction, wherein the payment request comprises transaction information associated with the purchase transaction, present at least a portion of the transaction information on a user interface, receive payment source data from a remote resource, securely wrap the payment source data and transmit the payment source data to a remote device. Other embodiments may be described. | 03-13-2014 |
20140169560 | ENHANCED WIRELESS COMMUNICATION SECURITY - Systems, methods, and devices are directed to an electronic device that includes a first wireless communication module configured to facilitate transmission and reception of data via a wireless communication link and a first secure element while a wireless communication device includes a processor, an operating system executed by the processor, a second wireless communication module configured to facilitate transmission and reception of data via the wireless communication link, and a second secure element. The second secure element exchanges information with the first secure element via the wireless communication link to establish a secure channel within the wireless communication link, and the wireless communication device employs logic configured to route the data to the second secure element for processing prior to forwarding the data to the operating system, upon establishing the secure channel. | 06-19-2014 |
Patent application number | Description | Published |
20090175162 | Method of OFDM communication using superposition coding - Improvements are provided in an OFDM network that uses superposition coding. A broadcast signal and e.g. a unicast signal are each subjected to OFDM modulation including processing by an IDFT, combined, and transmitted using non-orthogonal transmission resources. In one approach, the respective signals are combined after instead of before the IDFT processing. In specific examples, a respective cyclic prefix is appended to each signal after the IDFT processing but before the respective signals are combined. In another approach, a broadcast pilot signal and e.g. a unicast pilot signal are transmitted concurrently with the broadcast and unicast information signals. The pilot signals are transmitted using the same time and subcarrier resources, but are mad e more distinguishable by combining each with a respective scrambling or spreading code. In specific examples, embodiments, the unicast pilot signal is used for estimating the data rate for transmission of further unicast information signals. | 07-09-2009 |
20120250647 | METHODS OF REVERSE LINK POWER CONTROL - Methods of reverse link power control are provided. A first example method includes first adjusting OFDMA transmission power based on first feedback signals during an OFDMA transmission and second adjusting OFDMA transmission power based on second feedback signals during periods between OFDMA transmissions. A second example method includes sending first power adjustment indicators based on measured OFDMA SINRs when receiving OFDMA transmissions from a mobile station and sending second power adjustment indicators based on estimated OFDMA SINRs when not receiving OFDMA transmissions from the mobile station. A third example method includes receiving a plurality of interference indicating signals from different base stations and determining whether to adjust a maximum transmit power threshold based on the plurality of interference indicating signals, the maximum transmit power threshold indicating the maximum permitted transmission power level below which transmissions are constrained. | 10-04-2012 |
20140199945 | Method to control the effects of out-of-cell interference in a wireless cellular system using backhaul transmission of decoded data and formats - Successfully decoded data received from a mobile terminal as well as the transmission format of that data is relayed over the backhaul from a base station receiver that successfully decoded the mobile terminal's transmission to the base stations in the mobile terminal's active set that presumably were unable to decode the mobile terminal's transmission due to inadequate signal-to-noise ratio. A base station that receives this transmission from the relaying base station that did successfully decode and demodulate the mobile terminal's transmission is then able to reconstruct the data and subtract it from the total interference, thereby increasing the signal-to-noise ratio at this base station for its in-cell processing. | 07-17-2014 |
20140219172 | METHODS OF REVERSE LINK POWER CONTROL - Methods of reverse link power control are provided. In one example embodiment, a signal-to-interference+noise (SINR) is measured for a plurality of mobile stations. A power control adjustment is determined for each of the mobile stations based on the measured SINR for the mobile station and a fixed target SINR, the fixed target SINR being used in the determining step for each mobile station and sending the power control adjustments to the mobile stations. In another example embodiment, one or more signals are transmitted to a base station. A power control adjustment indicator indicating an adjustment to a transmission power level is received. The received power control adjustment is determined based on a measured signal-to-interference+noise ratio (SINR) for the one or more transmitted signals and a fixed target SINR threshold, the fixed target SINR threshold being used for power control adjustment of a plurality of mobile stations. | 08-07-2014 |
Patent application number | Description | Published |
20090279478 | METHOD AND APPARATUS FOR FACILITATING DYNAMIC COOPERATIVE INTERFERENCE REDUCTION - Various embodiments are described for potentially improving coverage and/or the cell-edge outage rate and thereby the system capacity. Logic flow diagrams | 11-12-2009 |
20100040157 | Wireless communication method with air-interface encoder packets configured for more efficient use of network resources - A method is provided for communicating data belonging to at least one application flow (AF). In one aspect, the method involves mapping the data to payload bits of two or more encoder packets (EPs) such that each said EP carries a payload dedicated to only one AF, and transmitting the EPs concurrently. In a second aspect, the above said mapping is inverted at a receiver. | 02-18-2010 |
20130170574 | Cell Clustering and Aperture Selection - A method is disclosed that includes accessing baseband information for a number, N (N>1), of antennas accessible by a number of baseband units, where the baseband information correspond to a transmission by a user equipment and is received at the N antennas. The method includes determining values for one or more metrics for the baseband information for the N antennas. The method includes selecting, based on the determined values, a subset k of the N antennas and corresponding baseband information to use to determine output data for the transmission by the user equipment. The method includes determining the output data for the user equipment using the baseband information from the k antennas. Apparatus and computer program products are also disclosed. | 07-04-2013 |
20130172050 | Uplink Grouping and Aperture Apparatus - A method includes selecting a subset k of N accessible antennas to use to process a transmission received at the N antennas and sent by a user equipment, and processing the transmission from the user equipment at least by using baseband information from the k antennas. An apparatus includes one or more processors and one or more memories including computer program code. The one or more memories and the computer program code are configured to, with the one or more processors, cause the apparatus to perform at least the following: selecting a subset k of N accessible antennas to use to process a transmission received at the N antennas and sent by a user equipment; and processing the transmission from the user equipment at least by using baseband information from the k antennas. Additional apparatus, computer programs, and computer program products are disclosed. | 07-04-2013 |
20130223501 | Error Prediction For Two-Stage Receivers - Apparatus, methods, and programs products are disclosed that perform the following techniques: in a receiver comprising first and second stages, each stage at least decoding information corresponding to a user equipment, wherein the second stage performs decoding only if the first stage completes decoding with a fail, predicting whether decoding performed by the second stage for the user equipment will complete with a pass or fail; and prior to completion of the second stage, sending an indication of the predicted pass or fail to the user equipment. | 08-29-2013 |
20130225144 | Methods And Apparatus For Interference Management - Systems and techniques for managing interference between pico cells in a pico cluster. Pico eNodeBs are configured in groups for each of a plurality of UEs, based on factors such as signal to noise ratio and geographic location. All signals from UEs may be measured by all eNodeBs in the cluster, but a pico group decodes packets only of UEs associated with the pico group. Decoded packets are exchanged between pico groups, and when a pico group is unable to decode packets of an associated UE, is uses the decoded packets received in exchanges to reconstruct an interference signal. The interference signal is subtracted from the received signal and the resulting received signal is used to decode the packets of the UE. | 08-29-2013 |
20130238534 | METHOD AND SYSTEM FOR PREDICTION AND ROOT CAUSE RECOMMENDATIONS OF SERVICE ACCESS QUALITY OF EXPERIENCE ISSUES IN COMMUNICATION NETWORKS - Embodiments of the invention utilize advanced statistical data analytics to predict and provide recommendations for root-cause analysis for service access QoE issues in networks, such as 3G/4G networks. Using FCAPS data as predictor variables, embodiments are configured to set up the problem as a predictive regression or classification problem to estimate service access QoE related indicators. Some embodiments perform training and tuning of various non-linear statistical modelling algorithms, based for example on tree and ensemble methods, using network deregistration information from RAN logs. | 09-12-2013 |
20130294418 | Switching Between Remote Radio Heads - An exemplary embodiment in accordance with this invention provides a method of managing a set of uplink reception paths and controlling the timing of uplink transmission of a UE. The method includes selecting a dominant path from a plurality of paths based at least in part on measurements of the plurality of paths. A path describes a communication route from a mobile device to an access point via a RRH. The method also includes selecting a plurality of non-dominant serving paths from the plurality of paths based at least in part on the measurements; determining a timing window based at least in part on the dominant path; determining a TA for the mobile device based at least in part on the timing window and sending the TA to the mobile device. Apparatus and computer readable media are also described. | 11-07-2013 |
20140106695 | Antenna Clustering For Multi-Antenna Aperture Selection - The specification and drawings present a new method, apparatus and software related product for antenna clustering for multi-antenna aperture selection (MAAS), e.g., in LTE wireless systems, using multi-core DSP processing with sub-optimum selection of N out of M of antenna signals and minimizing the performance degradation due to the sub-optimal antenna/antenna signal selection. Assigning each DSP core (machine) to N/K antennas (i.e., to antenna signals) having a similar property (e.g., polarization) and a same tier, the selection of N out of M using a predefined criterion (e.g., best SINR) is reduced to selecting N/K out of M/K which reduces the computation complexity by a factor of K, where K is a number of the DSP cores. | 04-17-2014 |
20140169280 | Timing Error Estimate Of UL Synchronization - The specification and drawings present a new method, apparatus and software related product (e.g., a computer readable memory) for a timing offset/error estimate (TOE) method, e.g., for a LTE UL receiver. This may especially beneficial for the MU-MIMO and/or CoMP with MAAS applications, where the conventional methods do not work properly due to a strong interference among users (UEs) sharing the same radio resource. Two approaches (separately or in combination) may be used to improve TOE quality. First, the timing offset/error may be calculated using phase difference for pilot pairs with non-adjacent pilots/carriers having a larger separation between subcarriers than for pilot pairs with adjacent subcarriers. Second, a modified pilot sequence for timing offset estimate may be created using sliding an averaging window. This can effectively remove interference which is critical for the MU-MIMO and CoMP applications. | 06-19-2014 |
20150023318 | Method To Control The Effects Of Out-Of-Cell Interference In A Wireless Cellular System Using Over-The-Air Feedback Control - A mobile terminal is controlled via over-the-air feedback so as to enable its data transmissions to be independently and successfully decoded at each of the base stations in its active set absent a transmit power limitation or data retransmission limit. Using the decoded data, the channel is re-estimated and the waveform received from the mobile terminal is reconstructed and subtracted from the total interference at each base station in the active set where decoding has been successful. As a result, transmissions from other mobile terminals, which have yet to be successfully decoded at such a base station, will experience a higher signal-to-noise ratio and thus an increased likelihood of being successfully decoded. | 01-22-2015 |