Patents by Inventor Kou-Joan Cheng

Kou-Joan Cheng 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).

  • Xylanase gene sequences from the genomic DNA of unpurified rumen microorganisms
    Patent number: 7635471
    Abstract: A xylanase gene, denoted xynR8, encoding a xylanase (XynR8) obtained from the unisolated rumen microorganisms is provided. The DNA sequence of the xynR8 gene, xylanase, is also provided, the enzyme is thermostable, and highly specific for xylans with high activity. Transformation of microbial hosts with the xynR8 gene is described. A method for degrading the xylan-containing structure comprises hydrolyzing the ?-1,4-glycosidic bonds of xylans by contacting xylanase is provided, and a composition employing the above-mentioned hydrolyzing method is further addressed.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: December 22, 2009
    Assignee: Genozyme Biotech Inc.
    Inventors: Kou-Joan Cheng, Yo-Chia Chen, Hsueh-Ling Cheng, Shiou Hua Lin, Je Ruei Liu, Bi Yu
  • Enhancing enzyme thermostability by mixing with sorghum liquor waste
    Patent number: 7566556
    Abstract: A composition containing a thermolabile protein admixed with a liquor waste. Also disclosed is a method of preparing such a composition which contains a protein with enhanced thermostability.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: July 28, 2009
    Assignee: Academia Sinica
    Inventors: Kou-Joan Cheng, Ching-Tsan Huang, Chang-Chih Chen
  • Xylanase gene sequences from the genomic DNA of unpurified rumen microorganisms
    Publication number: 20080118491
    Abstract: A xylanase gene, denoted xynR8, encoding a novel xylanase (XynR8) obtained from the unisolated rumen microorganisms is provided. The DNA sequence of the xynR8 gene, xylanase, is also provided, the enzyme is thermo-tolerable, and highly specific for xylans with high activity. Transformation of microbial hosts with the xynR8 gene is described. A method for degrading the xylan-containing structure comprises hydrolyzing the ?-1,4-glycosidic bonds of xylans by contacting xylanase is provided, and a composition employing the above-mentioned hydrolyzing method is further addressed.
    Type: Application
    Filed: August 21, 2006
    Publication date: May 22, 2008
    Applicant: GENOZYME BIOTECH INC.
    Inventors: Kou-Joan Cheng, Yo-Chia Chen
  • Enhancing protein thermostability
    Publication number: 20030166195
    Abstract: A composition containing a thermolabile protein admixed with a liquor waste. Also disclosed is a method of preparing such a composition which contains a protein with enhanced thermostability.
    Type: Application
    Filed: March 1, 2002
    Publication date: September 4, 2003
    Inventors: Kou-Joan Cheng, Ching-Tsan Huang, Chang-Chih Chen, Tsung-Yin Tang