Patents by Inventor Bob Chen

Bob Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10227583
    Abstract: High-throughput methods for screening large populations of variant proteins are provided. The methods utilize large-scale arrays of microcapillaries, where each microcapillary comprises a solution containing a variant protein, an immobilized target molecule, and a reporter element. Immobilized target molecules may include any molecule of interest, including proteins, nucleic acids, carbohydrates, and other biomolecules. The association of a variant protein with a molecular target is assessed by measuring a signal from the reporter element. The contents of microcapillaries identified in the assays as containing variant proteins of interest can be isolated, and cells expressing the variant proteins of interest can be characterized. Also provided are systems for performing the disclosed screening methods.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: March 12, 2019
    Assignee: XCELLA BIOSCIENCES, INC.
    Inventors: Jennifer R. Cochran, Bob Chen, Spencer Caleb Alford
  • Publication number: 20180299379
    Abstract: The present invention provides a method for measuring the amount of absorbance of a sample in a microcapillary based on measuring the absorbance in the sample.
    Type: Application
    Filed: April 9, 2018
    Publication date: October 18, 2018
    Inventor: Bob CHEN
  • Publication number: 20180188276
    Abstract: Multi-stage sample-recovery systems, including automated 2-stage and 3-stage sample-recovery systems, are provided. Such systems enable the rapid screening and recovery of samples, including viable cell-based samples, from high-throughput screening systems, including systems utilizing large-scale arrays of microcapillaries. In specific screening systems, each microcapillary comprises a solution containing a variant protein, an immobilized target molecule, and a reporter element. Immobilized target molecules may include any molecule of interest, including proteins, nucleic acids, carbohydrates, and other biomolecules. The association of a variant protein with a molecular target is assessed by measuring a signal from the reporter element. The contents of microcapillaries identified in the assays as containing variant proteins of interest can be identified and recovered using the multi-stage systems disclosed herein.
    Type: Application
    Filed: December 22, 2017
    Publication date: July 5, 2018
    Inventor: Bob CHEN
  • Publication number: 20180164294
    Abstract: High-throughput methods for screening large populations of variant proteins are provided. The methods utilize large-scale arrays of microcapillaries, where each microcapillary comprises a solution containing a variant protein, an immobilized target molecule, and a reporter element. Immobilized target molecules may include any molecule of interest, including proteins, nucleic acids, carbohydrates, and other biomolecules. The association of a variant protein with a molecular target is assessed by measuring a signal from the reporter element. The contents of microcapillaries identified in the assays as containing variant proteins of interest can be isolated, and cells expressing the variant proteins of interest can be characterized. Also provided are systems for performing the disclosed screening methods.
    Type: Application
    Filed: April 17, 2017
    Publication date: June 14, 2018
    Inventors: Jennifer R. COCHRAN, Bob CHEN, Spencer Caleb ALFORD
  • Publication number: 20180163198
    Abstract: High-throughput methods for screening large populations of variant proteins are provided. The methods utilize large-scale arrays of microcapillaries, where each microcapillary comprises a solution containing a variant protein, an immobilized target molecule, and a reporter element. Immobilized target molecules may include any molecule of interest, including proteins, nucleic acids, carbohydrates, and other biomolecules. The association of a variant protein with a molecular target is assessed by measuring a signal from the reporter element. The contents of microcapillaries identified in the assays as containing variant proteins of interest can be isolated, and cells expressing the variant proteins of interest can be characterized. Also provided are systems for performing the disclosed screening methods.
    Type: Application
    Filed: December 12, 2016
    Publication date: June 14, 2018
    Inventors: Jennifer R. COCHRAN, Bob CHEN, Spencer Caleb ALFORD
  • Publication number: 20160245805
    Abstract: Microcavity arrays and methods for quantitative biochemical and biophysical analysis of populations of biological variants. Examples include high-throughput analysis of cells and protein products use a range of fluorescent assays, including binding-affinity measurement and time-resolved enzyme assays. Laser-based extraction of microcavity contents.
    Type: Application
    Filed: February 22, 2016
    Publication date: August 25, 2016
    Inventors: Thomas M. Baer, Jennifer R. Cochran, Bob Chen, Spencer Caleb Alford, Ivan Dimov
  • Publication number: 20160244749
    Abstract: Microcavity arrays and methods for quantitative biochemical and biophysical analysis of populations of biological variants. Examples include high-throughput analysis of cells and protein products use a range of fluorescent assays, including binding-affinity measurement and time-resolved enzyme assays. Laser-based extraction of microcavity contents.
    Type: Application
    Filed: February 22, 2016
    Publication date: August 25, 2016
    Inventors: Jennifer R. Cochran, Thomas M. Baer, Bob Chen, Spencer Caleb Alford, Arvind Kannan, Sungwon Lim, Ivan Dimov
  • Publication number: 20140327375
    Abstract: According to various embodiments of the invention, an LED lighting system is providing having a replaceable driver module. In some embodiments, the replaceable driver module comprises a component that is physically attachable to an LED illumination module, whereby the attached components have a combined physical profile dimensioned for installation in a pre-existing light fixture. In further embodiments, the combined system's dimensions allow it to be installed in pre-existing fluorescent fixtures without requiring rewiring of the fixtures. In some embodiments, the LED driver module may be configured to condition power received from a fluorescent light ballast to drive the LEDs such that a pre-existing fluorescent ballast does not need to be removed. In other embodiments, the LED driver may be configured to condition main power such that a pre-existing fluorescent ballast may be removed.
    Type: Application
    Filed: July 15, 2014
    Publication date: November 6, 2014
    Applicant: PACIFIC DYNAMIC
    Inventors: STEVEN W. CARLIN, BOB CHEN, FRED CHEN, JEROME LEGERTON
  • Patent number: 8865864
    Abstract: Compositions that are EGF polypeptides that possess improved biological activity as compared to the biological activity exhibited by wild-type EGF are provided. Also provided are methods for the preparation of these mutants, methods for the use of these mutants, methods for rationally designing new polypeptide mutants, and methods for screening mutants polypeptides to identify novel EGF mutants with desirable biological activities.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: October 21, 2014
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Jennifer R. Cochran, Bertrand Howyen Lui, Jennifer Lynn Lahti, James R. Swartz, Bob Chen, Cheuk Lun Leung
  • Patent number: 8803426
    Abstract: According to various embodiments of the invention, an LED lighting system is providing having a replaceable driver module. In some embodiments, the replaceable driver module comprises a component that is physically attachable to an LED illumination module, whereby the attached components have a combined physical profile dimensioned for installation in a pre-existing light fixture. In further embodiments, the combined system's dimensions allow it to be installed in pre-existing fluorescent fixtures without requiring rewiring of the fixtures. In some embodiments, the LED driver module may be configured to condition power received from a fluorescent light ballast to drive the LEDs such that a pre-existing fluorescent ballast does not need to be removed. In other embodiments, the LED driver may be configured to condition main power such that a pre-existing fluorescent ballast may be removed.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: August 12, 2014
    Assignee: Pacific Dynamic
    Inventors: Steven W. Carlin, Bob Chen, Fred Chen, Jerome Legerton
  • Publication number: 20130141890
    Abstract: According to various embodiments of the invention, an LED lighting system is providing having a replaceable driver module. In some embodiments, the replaceable driver module comprises a component that is physically attachable to an LED illumination module, whereby the attached components have a combined physical profile dimensioned for installation in a pre-existing light fixture. In further embodiments, the combined system's dimensions allow it to be installed in pre-existing fluorescent fixtures without requiring rewiring of the fixtures. In some embodiments, the LED driver module may be configured to condition power received from a fluorescent light ballast to drive the LEDs such that a pre-existing fluorescent ballast does not need to be removed. In other embodiments, the LED driver may be configured to condition main power such that a pre-existing fluorescent ballast may be removed.
    Type: Application
    Filed: November 19, 2012
    Publication date: June 6, 2013
    Inventors: STEVEN W. CARLIN, BOB CHEN, FRED CHEN, JEROME LEGERTON
  • Publication number: 20130053314
    Abstract: Compositions that are EGF polypeptides that possess improved biological activity as compared to the biological activity exhibited by wild-type EGF are provided. Also provided are methods for the preparation of these mutants, methods for the use of these mutants, methods for rationally designing new polypeptide mutants, and methods for screening mutants polypeptides to identify novel EGF mutants with desirable biological activities.
    Type: Application
    Filed: August 27, 2012
    Publication date: February 28, 2013
    Inventors: Jennifer R. Cochran, Bertrand Howyen Lui, Jennifer Lynn Lahti, James R. Swartz, Bob Chen, Cheuk Lun Leung
  • Patent number: 8319437
    Abstract: According to various embodiments of the invention, an LED lighting system is providing having a replaceable driver module. In some embodiments, the replaceable driver module comprises a component that is physically attachable to an LED illumination module, whereby the attached components have a combined physical profile dimensioned for installation in a pre-existing light fixture. In further embodiments, the combined system's dimensions allow it to be installed in pre-existing fluorescent fixtures without requiring rewiring of the fixtures. In some embodiments, the LED driver module may be configured to condition power received from a fluorescent light ballast to drive the LEDs such that a pre-existing fluorescent ballast does not need to be removed. In other embodiments, the LED driver may be configured to condition main power such that a pre-existing fluorescent ballast may be removed.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: November 27, 2012
    Assignee: Pacific Dynamic
    Inventors: Steven W. Carlin, Bob Chen, Fred Chen
  • Publication number: 20110115382
    Abstract: According to various embodiments of the invention, an LED lighting system is providing having a replaceable driver module. In some embodiments, the replaceable driver module comprises a component that is physically attachable to an LED illumination module, whereby the attached components have a combined physical profile dimensioned for installation in a pre-existing light fixture. In further embodiments, the combined system's dimensions allow it to be installed in pre-existing fluorescent fixtures without requiring rewiring of the fixtures. In some embodiments, the LED driver module may be configured to condition power received from a fluorescent light ballast to drive the LEDs such that a pre-existing fluorescent ballast does not need to be removed. In other embodiments, the LED driver may be configured to condition main power such that a pre-existing fluorescent ballast may be removed.
    Type: Application
    Filed: February 19, 2010
    Publication date: May 19, 2011
    Inventors: Steven W. Carlin, Bob Chen, Fred Chen
  • Publication number: 20030204790
    Abstract: FILE:8774USF.RTF20A computer main board on/off testing device, method and system. The testing device at least includes the hardware circuits of a command translation unit and a test procedure control unit. The hardware circuits are connected onto a standard interface of the computer main board so that the power switch and reset switch within the computer main board are connected by connection wires. The main board is switched and reset automatically by executing the program inside a test control unit. Codes issued from the main board are translated through a command translation unit. Working conditions during on/off switching, reset and power management suspend/wake up operations are assessed and results of the test are registered.
    Type: Application
    Filed: August 20, 2002
    Publication date: October 30, 2003
    Applicant: VIA TECHNOLOGIES, INC.
    Inventors: Dong-Bo Hao, Moto Huang, Bob Chen
  • Patent number: 6059533
    Abstract: A vibration damped turbo-machine blade includes a shot peened metallic substrate which provides a shape for the blade. Carried on the metallic substrate and bonded to an outer surface of this substrate is a singular ceramic coating of a damping material. The substrate may be made of forged titanium, and the coating may be made of a ceramic material including cobalt at a weight percentage of from about 13% to about 21%, with the balance of the ceramic material being substantially all tungsten carbide.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: May 9, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Eric Stoker, Stan Pollitt, Terry Morris, Bob Chen, Ramish Doshi