Patents by Inventor Larry Zeng

Larry Zeng 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).

  • Apparatus for processing materials at high temperatures and pressures
    Patent number: 10145021
    Abstract: An apparatus for processing materials at high temperatures comprises a high strength enclosure; a plurality of high strength radial segments disposed adjacent to and radially inward from the high strength enclosure; a liner disposed adjacent to and radially inward from the radical segments; a chamber defined interior to the liner; a heating device disposed within the chamber; and a capsule disposed within the chamber, the capsule configured to hold a supercritical fluid. The apparatus may be used for growing crystals, e.g., GaN, under high temperature and pressure conditions.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: December 4, 2018
    Assignee: SLT TECHNOLOGIES, INC.
    Inventors: Kirsh Afimiwala, Larry Zeng
  • APPARATUS FOR PROCESSING MATERIALS AT HIGH TEMPERATURES AND PRESSURES
    Publication number: 20150122172
    Abstract: An apparatus for processing materials at high temperatures comprises a high strength enclosure; a plurality of high strength radial segments disposed adjacent to and radially inward from the high strength enclosure; a liner disposed adjacent to and radially inward from the radical segments; a chamber defined interior to the liner; a heating device disposed within the chamber; and a capsule disposed within the chamber, the capsule configured to hold a supercritical fluid. The apparatus may be used for growing crystals, e.g., GaN, under high temperature and pressure conditions.
    Type: Application
    Filed: July 28, 2011
    Publication date: May 7, 2015
    Applicant: MOMENTIVE PERFORMANCE MATERIALS, INC.
    Inventors: Kirsh Afimiwala, Larry Zeng
  • Glass-tube extended-baking process
    Patent number: 8230702
    Abstract: Disclosed is a method of heat treating quartz glass deposition tubes at between 900° C. and 1200° C. for at least 115 hours. The resulting deposition tubes are useful in forming optical preforms that can yield optical fibers having reduced added loss.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: July 31, 2012
    Assignee: Draka Comteq, B.V.
    Inventors: Guangjun Xu, Larry Zeng, Ivo Flammer, Dennis Robert Simons, Cedric Gonnet, Rob Hubertus Matheus Deckers
  • Glass-Tube Extended-Baking Process
    Publication number: 20110226020
    Abstract: Disclosed is a method of heat treating quartz glass deposition tubes at between 900° C. and 1200° C. for at least 115 hours. The resulting deposition tubes are useful in forming optical preforms that can yield optical fibers having reduced added loss.
    Type: Application
    Filed: May 23, 2011
    Publication date: September 22, 2011
    Applicant: DRAKA COMTEQ B.V.
    Inventors: Guangjun Xu, Larry Zeng, Ivo Flammer, Dennis Robert Simons, Cedric Gonnet, Rob Hubertus Matheus Deckers
  • Extended-baking process for glass deposition tubes
    Patent number: 7946135
    Abstract: Disclosed is a method of heat treating quartz glass deposition tubes at between 900° C. and 1200° C. for at least 115 hours. The resulting deposition tubes are useful in forming optical preforms that can yield optical fibers having reduced added loss.
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: May 24, 2011
    Assignees: Draka Comteq, B.V., Momentive Performance Materials, Inc.
    Inventors: Guangjun Xu, Larry Zeng, Ivo Flammer, Dennis Robert Simons, Cedric Gonnet, Rob Hubertus Matheus Deckers
  • Extended-Baking Process for Glass Deposition Tubes
    Publication number: 20080282743
    Abstract: Disclosed is a method of heat treating quartz glass deposition tubes at between 900° C. and 1200° C. for at least 115 hours. The resulting deposition tubes are useful in forming optical preforms that can yield optical fibers having reduced added loss.
    Type: Application
    Filed: January 2, 2008
    Publication date: November 20, 2008
    Applicant: DRAKA COMTEQ B.V.
    Inventors: Guangjun Xu, Larry Zeng, Ivo Flammer, Dennis Robert Simons, Cedric Gonnet, Rob Hubertus Matheus Deckers
  • Optical fiber deposition tube fused in deuterium atmosphere for attenuation improvement
    Publication number: 20050039490
    Abstract: A silica deposition tube is fused in a deuterium (D2) gas atmosphere and optionally baked in a deuterium (D2) gas atmosphere to substantially reduce the hydrogen content in the tube for decreased fiber attenuation. Alternatively, raw silica material is pre-treated in D2 gas followed by fusing of the raw silica tube in a D2 gas environment.
    Type: Application
    Filed: October 4, 2004
    Publication date: February 24, 2005
    Inventors: Larry Zeng, Victor Lou, Frederic Ahlgren, Anil Duggal