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Chee, CA

Hiram Chee, Menlo Park, CA US

Patent application numberDescriptionPublished
20130142731THREADS OF CROSS-LINKED HYALURONIC ACID AND METHODS OF USE THEREOF - This invention relates generally to threads of hyaluronic acid, methods of making such threads and uses thereof, for example, in aesthetic applications (e.g., facial contouring, dermal fillers), surgery (e.g., sutures), drug delivery, negative pressure wound therapy, moist wound dressing, and the like.06-06-2013

Hiram Chee, Santa Cruz, CA US

Patent application numberDescriptionPublished
20090105766Systems, Devices and Methods for the Correction of Spinal Deformities - Provided herein are systems, devices and methods for the correction of spinal deformities with the use one or more implantable rods configured to apply a corrective force to the spine. Methods of minimally invasive implantation of a corrective system are provided, such as where the corrective system is attached only to the spinous process of one or more vertebral bodies. Various corrective systems as well as components thereof are also provided.04-23-2009
20110077687Systems, Methods And Devices For Correcting Spinal Deformities - Provided herein are systems, devices and methods for the correction of spinal deformities with the use one or more implantable rods configured to apply a corrective force to the spine. Methods of minimally invasive implantation of a corrective system are provided, such as where the corrective system is attached only to the spinous process of one or more vertebral bodies. Various corrective systems as well as components thereof are also provided, such as those that allow limited movement with respect to the spinal column.03-31-2011
20130066377Systems, Devices and Methods for the Correction of Spinal Deformities - Provided herein are systems, devices and methods for the correction of spinal deformities with the use one or more implantable rods configured to apply a corrective force to the spine. Methods of minimally invasive implantation of a corrective system are provided, such as where the corrective system is attached only to the spinous process of one or more vertebral bodies. Various corrective systems as well as components thereof are also provided.03-14-2013

Patent applications by Hiram Chee, Santa Cruz, CA US

Jaime Chee, San Diego, CA US

Patent application numberDescriptionPublished
20100118210TECHNIQUES FOR IMPLEMENTING A CURSOR FOR TELEVISIONS - Techniques for implementing a cursor or other similar widget for televisions include outputting a graphical user interface including a widget and any combination of objects on a television Thereafter one or more key events may be received from a remote control. The graphical user interface can be updated by moving the widget in response to each direction key activation if the one or more key events indicate activation of one or more direction keys on the remote control. In addition, a function designated by a given object may be initiated in response to the activation of the enter key if the widget is determined to be proximate the given object.05-13-2010
20100138867AUDIOVISUAL USER INTERFACE BASED ON LEARNED USER PREFERENCES - A method and apparatus for providing an audiovisual user interface based on learned user preferences is described. In one implementation, the method involves collecting a set of user preferences for a user; providing a metadata stream associated with an audiovisual input; comparing elements within the metadata stream with the set of user preferences to form a comparison; and outputting a message to the user if the comparison indicates that the metadata stream matches one or more elements of the set of user preferences. The message may be output either acoustically or visually, and may relate to the audiovisual input, which may be audio, video, or both audio and video. The audiovisual input may be blocked based on a restricted message, and may be accessed upon a successful password query.06-03-2010
20100192219TEMPORALLY SYNCHRONIZED VIDEO DISPLAY UNIT SCREENSAVER OR WALLPAPER BASED ON USER PREFERENCES - A method of generating an audiovisual object such as a wallpaper or screensaver keyed to a user's preferences, local time, and location, comprising: collecting a set of user preferences for a user; providing a metadata stream associated with an audiovisual input; comparing elements within the metadata stream with the set of user preferences to form a comparison; and outputting an audiovisual object to the user's video display unit if the comparison indicates that the metadata stream matches one or more elements of the set of user preferences. User preferences may be collected from user habits based on metadata streams associated with the audiovisual input, or may be directly input by the user. The methods above may also be stored on a computer readable medium.07-29-2010
20100235791SMART MENU APPARATUS - A smart search menu is displayed on a video display unit, wherein the menu includes an accumulated search criteria list and a results list. A user's selection is input from the menu as a selected element, and, if the user has selected an element of the search criteria, then the information is output to the video display unit. By accumulating the search criteria as a list of search criteria, the user is less likely to be “lost” within the search menus, and may therefore more quickly find desired content within a content database.09-16-2010
20110102684Automatic capture of data for acquisition of metadata - A television receiver device consistent with certain implementations has a display associated with the television receiver device. A filter converts a stream of audio/video content that is to be displayed on the display associated with the television receiver device into a stream of digital audio data. A buffer stores a sample of the digital audio data. A modem transmits the sample of audio data from the buffer to a content identification server and that receives metadata identifying the audio data from the content identification server. A display processor renders at least a portion of the metadata to the display. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.05-05-2011
20120233286APPLICATION RUNNING DEVICE TO PERSONALIZE THE RUI - An application device generates a personalized remote user interface corresponding to a user. After the personalized remote user interface is sent to a rendering device, the personalized remote user interface displays a remote user interface related to the user.09-13-2012
20120233552PERSONALIZING THE USER EXPERIENCE - A database device generates a personalized remote user interface corresponding to a user. The database device discovers devices in a network and receives device information and user information from the devices. The database device generates a profile based on the device information and the user information. Using the profile, the database device generates a personalized remote user interface. After the personalized remote user interface is sent to a rendering device, the personalized remote user interface displays a remote user interface specific to the user.09-13-2012
20120311632VIDEO SEARCHING USING TV AND USER INTERFACES THEREFOR - Using a TV, a viewer watching broadcast TV or Internet video content on a display can select a “Video Search” application indicating viewer desire to obtain information about a currently playing video program. The application is invoked to send a name of the currently playing video program to a server on the Internet and associated with a database to cause the server to execute a search only of the database associated with the Internet server and not to execute a search of the Internet. The server returns metadata related to the currently playing vided program, which is presented on the display along with the currently playing video program.12-06-2012
20120311636VIDEO SEARCHING USING TV AND USER INTERFACE THEREFOR - An audio video (AV) device presents a user interface (UI) on the display. The UI has plural UI selector elements, including a left-most column of tabbed selector elements including a “video” tab, a “cast” tab, a “related” tab, with the tabs representing types of information and/or AV programs related to a seed input to the processor. The tabbed selector elements are selectable to cause, the information and/or AV programs represented by the respective tab to be presented on a central information/video area. The UI also includes a right-most column of iconified selector elements for selecting respective AV program sources from which information and/or AV programs related to the seed are available. The iconified selector elements are selectable to cause information and/or AV programs related to the seed to be received from the respective source and presented on the central information/video area.12-06-2012
20120311639VIDEO SEARCHING USING TV AND USER INTERFACES THEREFOR - A viewer watching a video program on a display of an audio-video device can select a “Video Search” application indicating viewer desire to obtain information about a currently playing video program. The application is invoked to send name of the currently playing video program to a server associated with a database to cause the server to execute a search of the database. The server returns metadata related to the currently playing video program, which is presented on the display along with the currently playing video program. The metadata includes links to additional information, such as cast members associated with the video program. The links are selectable to cause the server to execute a search of the database for metadata relating to the additional information, which is returned to the AV device and presented on the display along with the currently playing video program.12-06-2012

Patent applications by Jaime Chee, San Diego, CA US

Mark Chee, La Jolla, CA US

Patent application numberDescriptionPublished
20130150248Arrays of Nucleic Acid Probes for Analyzing Biotransformation Genes - The invention provides arrays of immobilized probes, and methods employing the arrays, for detecting mutations in the biotransformation genes, such as cytochromes P450. For example, one such array comprises four probe sets. A first probe set comprises a plurality of probes, each probe comprising a segment of at least three nucleotides exactly complementary to a subsequence of a reference sequence from a biotransformation gene, the segment including at least one interrogation position complementary to a corresponding nucleotide in the reference sequence. Second, third and fourth probe sets each comprise a corresponding probe for each probe in the first probe set. The probes in the second, third and fourth probe sets are identical to a sequence comprising the corresponding probe from the first probe set or a subsequence of at least three nucleotides thereof that includes the at least one interrogation position, except that the at least one interrogation position is occupied by a different nucleotide in each of the four corresponding probes from the four probe sets.06-13-2013

Mark Chee, Del Mar, CA US

Patent application numberDescriptionPublished
20100041569METHODS OF USING AN ARRAY OF POOLED PROBES IN GENETIC ANALYSIS - The invention provides arrays of polynucleotide probes having at least one pooled position. A typical array comprises a support having at least three discrete regions. A first region bears a pool of polynucleotide probes comprising first and second probes. A second region bears the first probe without the second probe and a third region bears the second probe without the first probe. A target nucleic acid having segments complementary to both the first and second probes shows stronger normalized binding to the first region than to the aggregate of binding to the second and third regions due to cooperative binding of pooled probes in the first region. The invention provide methods of using such arrays for e.g., linkage analysis, sequence analysis, and expression monitoring.02-18-2010
20110009289METHODS OF USING AN ARRAY OF POOLED PROBES IN GENETIC ANALYSIS - The invention provides arrays of polynucleotide probes having at least one pooled position. A typical array comprises a support having at least three discrete regions. A first region bears a pool of polynucleotide probes comprising first and second probes. A second region bears the first probe without the second probe and a third region bears the second probe without the first probe. A target nucleic acid having segments complementary to both the first and second probes shows stronger normalized binding to the first region than to the aggregate of binding to the second and third regions due to cooperative binding of pooled probes in the first region. The invention provides methods of using such arrays for e.g., linkage analysis, sequence analysis, and expression monitoring.01-13-2011

Patent applications by Mark Chee, Del Mar, CA US

Mark Chee, Encinitas, CA US

Patent application numberDescriptionPublished
20090286688COMBINATORIAL DECODING OF RANDOM NUCLEIC ACID ARRAYS - Methods disclosed herein relate to identification of nucleotides in a nucleotide sequence.11-19-2009
20110251101COMBINATORIAL DECODING OF RANDOM NUCLEIC ACID ARRAYS - Methods disclosed herein relate to identification of nucleotides in a nucleotide sequence.10-13-2011
20120245039Entangled Mate Sequencing - Methods and compositions are provided for performing a set of N DNA sequencing reaction cycles whereby sequence information is obtained for approximately 2*N nucleotide bases.09-27-2012
20120264622COMBINATORIAL DECODING OF RANDOM NUCLEIC ACID ARRAYS - Methods disclosed herein relate to identification of nucleotides in a nucleotide sequence.10-18-2012

Patent applications by Mark Chee, Encinitas, CA US

Mark Chee, Palo Alto, CA US

Patent application numberDescriptionPublished
20080261832Arrays of nucleic acid probes for detecting cystic fibrosis - The invention provides arrays of immobilized probes, and methods employing the arrays, for detecting mutations in the CFTR gene.10-23-2008
20120329677ARRAYS OF NUCLEIC ACID PROBES FOR DETECTING CYSTIC FIBROSIS - The invention provides arrays of immobilized probes, and methods employing the arrays, for detecting mutations in the CFTR gene.12-27-2012

Patent applications by Mark Chee, Palo Alto, CA US

Mark S. Chee, Encinitas, CA US

Patent application numberDescriptionPublished
20090023605OLIGONUCLEOTIDE SYNTHESIZER - An apparatus for high-throughput combinatorial synthesis of organic molecules including a reaction vessel for containing a combinatorial chemistry synthetic reaction, a liquid dispenser for dispensing the liquid, a liquid aspirator and an adjustment mechanism. The reaction vessel includes an ingress aperture allowing a liquid to enter into an interior of the vessel and an egress aperture for aspirating the liquid from the vessel. The liquid dispenser dispenses liquid through the ingress aperture. The liquid aspirator aspirates liquid through the egress aperture and includes a rotor for carrying the vessel and orbiting the vessel about an axis of rotation. The rotor is oriented generally in a horizontal plane and includes an adjustment mechanism for adjusting the angle of the vessel relative to the horizontal plane in response to the centrifugal force generated by orbiting the vessel about the axis or rotation. A method of combinatorial synthesis of organic molecules is also disclosed.01-22-2009
20090215649ARRAY KITS AND PROCESSING SYSTEMS - The invention relates to sensor compositions comprising a composite array of individual arrays, to allow for simultaneous processing of a number of samples. The invention further provides methods of making and using the composite arrays. The invention further provides a hybridization chamber for use with a composite array.08-27-2009
20090221450METHODS OF MAKING ARRAYS - The invention relates to sensor compositions comprising a composite array of individual arrays, to allow for simultaneous processing of a number of samples. The invention further provides methods of making and using the composite arrays. The invention further provides a hybridization chamber for use with a composite array.09-03-2009
20110143965OLIGONUCLEOTIDE SYNTHESIZER - An apparatus for high-throughput combinatorial synthesis of organic molecules including a reaction vessel for containing a combinatorial chemistry synthetic reaction, a liquid dispenser for dispensing the liquid, a liquid aspirator and an adjustment mechanism. The reaction vessel includes an ingress aperture allowing a liquid to enter into an interior of the vessel and an egress aperture for aspirating the liquid from the vessel. The liquid dispenser dispenses liquid through the ingress aperture. The liquid aspirator aspirates liquid through the egress aperture and includes a rotor for carrying the vessel and orbiting the vessel about an axis of rotation. The rotor is oriented generally in a horizontal plane and includes an adjustment mechanism for adjusting the angle of the vessel relative to the horizontal plane in response to the centrifugal force generated by orbiting the vessel about the axis or rotation. A method of combinatorial synthesis of organic molecules is also disclosed.06-16-2011
20110245101CO-LOCALIZATION AFFINITY ASSAYS - The invention provides a new assay format for high throughput molecular binding studies at a single molecule level. The invention enables creation of binding event identifiers in a highly parallel way. Individual binding events occur between two agents of a binding pair, e.g., a protein-based binding pair or a binding pair comprising a protein and a chemical moiety. The binding event identifier created through the binding of the two binding agents is unique to that pair, and identification of the binding event identifier is indicative of the binding of these specific may be assessed through a readout that is digital in nature. The invention enables very large sets of thousands or more of different binding agents or potential binding agents to be assayed simultaneously, resolving millions or more of potential interactions, and distinguishing specific interactions from those that are less specific.10-06-2011
20110245111SPATIALLY ENCODED BIOLOGICAL ASSAYS - The present invention provides assays and assay systems for use in spatially encoded biological assays. The invention provides an assay system comprising an assay capable of high levels of multiplexing where reagents are provided to a biological sample in defined spatial patterns; instrumentation capable of controlled delivery of reagents according to the spatial patterns; and a decoding scheme providing a readout that is digital in nature.10-06-2011
20120028815NUCLEIC ACID SEQUENCING USING MICROSPHERE ARRAYS - The invention relates to DNA sequencing by synthesis techniques, including those utilizing the detection of pyrophosphate (PPi) generated during the DNA synthesis reaction (pyrosequencing). The methods and compositions utilize biosensor arrays comprising microspheres distributed on a surface.02-02-2012
20120065081NUCLEIC ACID CONSTRUCTS AND METHODS OF USE - The present invention provides oligonucleotide constructs, sets of such oligonucleotide constructs, and methods of using such oligonucleotide constructs to provide validated sequences or sets of validated sequences corresponding to desired ROIs. Such validated ROIs and constructs containing these have a wide variety of uses, including in synthetic biology, quantitative nucleic acid analysis, polymorphism and/or mutation screening, and the like.03-15-2012
20120129248ASSAY TOOLS AND METHODS OF USE - The present invention provides assay tools for the detection of biological or chemical activity in a sample. The assay tools of the invention provide direct detection using a positive signal generated on a surface of the assay tool. These assay tools provide improved methods for detection and/or identification of multiple agents (e.g., enzymes) in a sample, analysis of substrate specificity of such agents, and binding affinities and specificities of such agents. Upon activity a component is released from a first immobilised construct and then captured by a capture surface. At least two different immobilised constructs are used.05-24-2012
20120129716USE OF MICROFLUIDIC SYSTEMS IN THE DETECTION OF TARGET ANALYTES USING MICROSPHERE ARRAYS - The invention relates generally to methods and apparatus for conducting analyses, particularly microfluidic devices for the detection of target analytes.05-24-2012
20120258871PEPTIDE CONSTRUCTS AND ASSAY SYSTEMS - The present invention provides methods for constructing peptide construct sets and methods of use of these peptide construct sets in assay systems for peptide analysis, and in particular for use in high throughput peptide analysis. The methods allow for analysis of large sets of peptide constructs in a cost-effective manner, employing molecular biological techniques that are both robust and easily parallelized. Thus, the methods allow for the construction of peptide construct sets encompassing, e.g., the human proteome.10-11-2012
20120270748PEPTIDE DISPLAY ARRAYS - The present invention provides arrays, methods of constructing arrays, and methods of use of such arrays. The arrays of the invention comprise a substrate with two or more discrete constructs or discrete sets of constructs associated on the surface of the substrate, optionally via a linker molecule. The constructs include an oligonucleotide comprising a region encoding a peptide of interest and an affinity tag and an untranslated region, a fusion peptide comprising both the peptide of interest and the affinity tag and a capture agent that forms a binding pair with the affinity tag.10-25-2012

Patent applications by Mark S. Chee, Encinitas, CA US

San Hwa Chee, Fremont, CA US

Patent application numberDescriptionPublished
20090058378CIRCUIT SYSTEM AND METHOD FOR REDUCING AN IN-RUSH CURRENT - A circuit is provided including an output stage with a pair of transistors. Further provided is a control circuit in communication with the output stage. The control circuit is capable of controlling a duration in which at least one of the transistors is actuated for reducing an in-rush current.03-05-2009
20110096944HIGH PERCEIVED AUDIO QUALITY CLASS D AMPLIFIER - An audio amplifier and a method of operating such an amplifier are disclosed. The audio amplifier includes a switch disabling controller and/or an output set-point controller. The switch disabling controller is configured to disable switching of an output switch circuit or other switch circuit while an input signal represents at least relative silence. The output set-point controller is configured to bring and/or hold first and second switch nodes toward and/or at a set-point voltage while the input signal represents at least relative silence.04-28-2011

U. Hiram Chee, Santa Cruz, CA US

Patent application numberDescriptionPublished
20120238996METHODS OF TREATING CARDIAC ARRHYTHMIA - Methods and apparatus of embodiments of the invention are adapted to treat tissue inside a patient's body. Aspects of the invention can be used in a wide variety of applications, but certain embodiments provide minimally invasive alternatives for treating atrial fibrillation by delivering a tissue-damaging agent to selected areas of the heart. One exemplary embodiment of the invention provides a method of treating cardiac arrhythmia. This method includes positioning a distal tissue-contacting portion of a body in surface contact with a tissue surface of cardiac tissue; detecting the surface contact between the tissue-contacting portion and the tissue surface; and thereafter, injecting a tissue-ablating agent into the cardiac tissue through the tissue-contacting portion of the body.09-20-2012

Uriel Hiram Chee, Redwood City, CA US

Patent application numberDescriptionPublished
20130090572Integrity Testing Method and Apparatus for Delivering Vapor to the Uterus - A method and system of providing therapy to a patient's uterus is provided, which can include any number of features. The method can include the steps of inserting a uterine device into the uterus and performing a uterine integrity test to determine that the uterus is intact and not perforated. If it is determined that the uterus is not perforated, a patency test can be performed to determine that the uterine device is not clogged or embedded in tissue. If the uterus is intact and the device is not clogged or embedded in tissue, the uterus can be treated with the uterine device, e.g., uterine ablation. Systems for performing these methods are also disclosed.04-11-2013

Uriel Hiran Chee, Santa Cruz, CA US

Patent application numberDescriptionPublished
20110152907Devices, systems, and methods for performing atherectomy including delivery of a bioactive material - Devices, systems, and methods are employed to perform an atherectomy in an identified region to restore patency to arterial lesions. A bioactive material is introduced into the identified region before, after or during performing the atherectomy. The bioactive material can be introduced, e.g., on a balloon coated with the bioactive material, which is expanded in contact with the identified region to deliver the bioactive material. The bioactive material can be, e.g., at least one of a restenosis-inhibiting agent, a thrombus-inhibiting agent, and an anti-inflammatory agent.06-23-2011

Wei-Meng Chee, Sunnyvale, CA US

Patent application numberDescriptionPublished
20130103844METHOD AND APPARATUS FOR MAINTAINING ONE OR MORE COMMUNICATION SESSIONS - An approach is provided for establishing one or more communication sessions in a cloud computing environment and maintaining the establishment of the one or more communication sessions while managing system resource and power resource consumption. The approach involves causing, at least in part, an establishment of one or more communication sessions between at least one device and one or more other devices, wherein the communication sessions convey, at least in part, one or more notification messages. The approach also involves processing and/or facilitating a processing of device resource information, device capability information, network resource information, or a combination thereof to determine one or more parameters for generating one or more heartbeat signals to maintain the one or more communication sessions.04-25-2013
20130103911METHOD AND APPARATUS FOR SYNCHRONIZING A CACHE - An approach is provided for segmenting a cache into one or more cache segments and synchronizing the cache segments. An cache platform causes, at least in part, a segmentation of at least one cache into one or more cache segments. The cache platform further determines that at least one cache segment of the one or more cache segments is invalid. The cache platform also causes, at least in part, a synchronization of the at least one cache segment. The approach allows for a dynamic optimization of the synchronization of the cache segments based on one or more characteristics associated with the devices and/or the connection associated with the cache synchronization.04-25-2013

Yong Chee, Beverly Hills, CA US

Patent application numberDescriptionPublished
20120114546Hybrid TCS-siemens process equipped with 'turbo charger' FBR; method of saving electricity and equipment cost from TCS-siemens process polysilicon plants of capacity over 10,000 MT/YR - A ‘hybrid’ TCS (Trichlorosilane)-Siemens process is provided to save electricity and initial investment cost from TCS synthesizing process and silicon tetrachloride to TCS converting process in a TCS-Siemens polysilicon plant, whose size is over 10,000 MT/YR of polysilicon. The ‘hybrid’ TCS-Siemens process of the current application is equipped with one direct chlorination FBR (Fluidized Bed Reactor) and one hydro-chlorination FBR. Three different TCS-Siemens processes are compared based on mass balance calculation. The hybrid TCS-Siemens process saves at least 78,000,000Kwhr/year of electricity from TCS generation only from a 10,000 MT/YR polysilicon plant when compared with a ‘Closed Loop TCS-Siemens Process’, which is equipped with only high-pressure, high-temperature operating hydro-chlorination FBRs.05-10-2012

Yongchae Chee, Beverly Hills, CA US

Patent application numberDescriptionPublished
20100264362Method of producing trichlorosilane (TCS) rich Chlorosilane product stably from a fluidized gas phase reactor (FBR) and the structure of the reactor - A fluidized bed reactor (FBR) for producing chlorosilane mixture, which has high contents of tri-chlorosilane (TCS), by hydro chlorination of metallurgical silicon (MGSI) and a method of producing high contents of TCS stably with the FBR is disclosed. A cooling jacket, which surrounds the lower reactor section, combined with inert initial charging material, which does not react with HCl during the reaction at a temperature of above 300° C. and pressure of above 5 bar, controls the extreme exothermal heat of the reaction. In addition to this, combination of an optimized gas distributor and a feeder that can feed the metallurgical silicon with accuracy of ±5% enabled to realize uniform temperature profile within the reaction zone within ±1 degree ° C. deviation at 350° C. of average reaction temperature and at 5 bar of reaction pressure.10-21-2010

Yongchae Chee, Beverly Hillss, CA US

Patent application numberDescriptionPublished
20100001236Method of producing trichlorosilane (TCS) rich product stably from a fluidized gas phase reactor (FBR) and the structure of the reactor - A fluidized bed reactor (FBR) for producing tri-chlorosilane (TCS) from metallurgical silicon (MGSI) and method of producing TCS stably with the FBR is disclosed. The FBR according to current application is comprised of 1) a straight lower bed section whose height over inner diameter ratio (H/D) is in the range of 3 to 6, 2) an expanded zone that has steep angle lower than 7 degree from the vertical line of the lower bed section, 3) a hemi-sphere top section on a flange for internal cooler, 4) a straight upper section of the reactor, 5) an internal cooler with flange, 6) a gas distribution plate, 7) a feed inlet line that has angle lower than 20 degree from the vertical line of the lower bed section, 8) a cyclone installed upper-outside of the FBR, 9) a recycle line from an outside cyclone that has angle lower than 20 degree from the vertical line of the lower bed section, 10) a seed bed hopper located vertically at the top of the hemi-sphere top section, 11) an outer cooling jacket surrounding the outside of the lower bed section, and 12) a feeder that controls feed rate of MGSI within ±5% accuracy.01-07-2010

Yong Chae Chee, Beverly Hills, CA US

Patent application numberDescriptionPublished
20110129402Method of producing trichlorosilane (TCS) rich product stably from hydrogenation of silicon tetra chloride (STC) in fluidized gas phase reactor (FBR) and the structure of the reactor - A fluidized bed reactor (FBR) for producing chlorosilane mixture containing trichlorosilane (TCS) concentration at least 50% from hydrogenation of special metallurgical silicon (MGSI), which has manganese concentration less than 35 ppmw, silicon tetra chloride (STC), and the method of producing high TCS content chlorosilane mixture is disclosed. The FBR according to current application has an expanded over head zone, whose inner diameter is at least twice bigger than that of the inner diameter of the lower straight zone. Temperature of the reaction bed is controlled between 300° C. to 600° C. within the mean temperature deviation of ±5 C. Reaction pressure is maintained between 3 to 10 bar. Retention time of the STC and hydrogen in the reaction bed is controlled to be shorter than 30 seconds. The FBR of the current application enables higher STY (space time yield; production rate/volume of the reactor) of TCS compared to any other current commercial STC cold converter, which hydrogenise STC to TCS.06-02-2011
20110297884Method of producing trichlorosilane (TCS) rich chlorosilane product stably from a fluidized gas phase reactor (FBR) and the structure of the reactor -II - A fluidized bed reactor (FBR) for producing chlorosilane mixture, which has high contents of tri-chlorosilane (TCS), by hydro chlorination of metallurgical silicon (MGSI) and a method of producing high contents of TCS stably with the FBR is disclosed. A cooling jacket, which surrounds the lower reactor section, combined with inert initial charging material, which does not react with HCl during the reaction at a temperature of above 300° C. and pressure of above 5 bar, controls the extreme exothermal heat of the reaction. In addition to this, combination of an optimized gas distributor and a feeder that can feed the metallurgical silicon with accuracy of ±5% enabled to realize uniform temperature profile within the reaction zone within ±1° C. deviation at 350° C. of average reaction temperature and at 5 bar of reaction pressure. Without the initial charging material, temperature profile within the reaction zone is controlled within ±30° C.12-08-2011

Yuen Hui Chee, Redwood City, CA US

Patent application numberDescriptionPublished
20130035048RADIO FREQUENCY FRONT END SYSTEM WITH AN INTEGRATED TRANSMIT/RECEIVE SWITCH - A Radio Frequency (RF) front end system and method are disclosed. The RF front end system comprises an antenna, a matching network coupled to the antenna, a power amplifier (PA) coupled to the matching network via a port on a transmit path, a low noise amplifier (LNA) coupled to the matching network via the port on a receive path and at least one transmit/receive switch (T/R SW) coupled between the port and at least one of the PA and LNA.02-07-2013

Yuen Hui Chee, Sunnyvale, CA US

Patent application numberDescriptionPublished
20090052099Hybrid Circuit for Circuit Protection and Switching - A hybrid circuit (02-26-2009
20090054004Biasing for Stacked Circuit Configurations - A biasing scheme for compensating for a difference in biasing currents between a first circuit element (02-26-2009