Patents by Inventor De-Cheng Xie

De-Cheng Xie 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).

  • SYSTEM AND METHOD FOR PURIFICATION OF SILANE USING LIQUID NITROGEN IN A POLYSILICON PRODUCTION PROCESS
    Publication number: 20140007615
    Abstract: A system and method for improved cryogenic cooling of process streams in polysilicon manufacturing is provided. The disclosed system and method provides for the cryogenic cooling of a silane and hydrogen process stream during the manufacture of polysilicon with concurrent recovery of refrigeration capacity from the vaporized nitrogen as well as the recovery of refrigeration capacity from the cold hydrogen stream. The improved cryogenic cooling system and method reduces the overall consumption of liquid nitrogen without sacrificing cooling performance of the cryogenic cooling of the silane and hydrogen process stream.
    Type: Application
    Filed: November 8, 2011
    Publication date: January 9, 2014
    Inventors: Alan T. Cheng, De-Cheng Xie, Zhijie Sun
  • SYSTEM AND METHOD FOR CRYOGENIC COOLING OF A PROCESS STREAM WITH ENHANCED RECOVERY OF REFRIGERATION
    Publication number: 20140000310
    Abstract: A system and method for improved cryogenic cooling of process gases is provided. The disclosed system and method provides for the cryogenic cooling of a silane and hydrogen gas process stream during the manufacture of polysilicon with concurrent recovery of refrigeration capacity from the vaporized nitrogen as well as the recovery of refrigeration capacity from the cold hydrogen gas stream. The improved cryogenic cooling system and method reduces the overall consumption of liquid nitrogen without sacrificing cooling performance of the cryogenic cooling of the silane and hydrogen gas process stream.
    Type: Application
    Filed: November 8, 2011
    Publication date: January 2, 2014
    Inventors: Alan T. Cheng, De-Cheng Xie Xie, Zhijie Sun