Patents by Inventor Shiow-Shong Yang

Shiow-Shong Yang 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).

  • Mutant proteolytic enzymes and method of production
    Patent number: 6403331
    Abstract: Mutant Bacillus lentus DSM 5483 proteases are derived by the replacement of at least one amino acid residue of the mature form of the B. lentus DSM 5483 alkaline protease. The mutant proteases are expressed by genes which are mutated by site-specific mutagenesis. The amino acid sites selected for replacement are identified by means of a computer based method which compares the three dimensional structure of the wild-type protease and a reference protease.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: June 11, 2002
    Assignee: Henkel Konnarditgesellshaft auf Aktien
    Inventors: Teresa Christianson, Dean Goddette, Beth Frances Ladin, Maria R. Lau, Christian Paech, Robert B. Reynolds, Charles R. Wilson, Shiow-Shong Yang
  • Mutant proteolytic enzymes and method of production
    Patent number: 6136553
    Abstract: Mutant B. lentus DSM 5483 proteases are derived by the replacement of at least one amino acid residue of the mature form of the B. lentus DSM 5483 alkaline protease. The mutant proteases are expressed by genes which are mutated by site-specific mutagenesis. The amino acid sites selected for replacement are identified by means of a computer based method which compares the three dimensional structure of the wild-type protease and a reference protease.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: October 24, 2000
    Inventors: Teresa Christianson, Dean Goddette, Beth Frances Ladin, Maria R. Lau, Christian Paech, Robert B. Reynolds, Charles R. Wilson, Shiow-Shong Yang
  • Mutant proteolytic enzymes and method of production
    Patent number: 5985639
    Abstract: Mutant B. lentus DSM 5483 proteases are derived by the replacement of at least one amino acid residue of the mature form of the B. lentus DSM 5483 alkaline protease. The mutant proteases are expressed by genes which are mutated by site-specific mutagenesis. The amino acid sites selected for replacement are identified by means of a computer based method which compares the three dimensional structure of the wild-type protease and a reference protease.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: November 16, 1999
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Teresa Christianson, Dean Goddette, Beth Frances Ladin, Maria R. Lau, Christian Paech, Robert B. Reynolds, Charles R. Wilson, Shiow-Shong Yang
  • Bacillus lentus alkaline protease varints with enhanced stability
    Patent number: 5500364
    Abstract: Mutant B. lentus DSM 5483 proteases are derived by the replacement of at least one amino acid residue of the mature form of the B. lentus DSM 5483 alkaline protease. The mutant proteases are expressed by genes which are mutated by site-specific mutagenesis. The amino acid sites selected for replacement are identified by means of a computer based method which compares the three dimensional structure of the wild-type protease and a reference protease.
    Type: Grant
    Filed: June 2, 1994
    Date of Patent: March 19, 1996
    Assignee: Cognis, Inc.
    Inventors: Teresa Christianson, Dean Goddette, Beth F. Ladin, Maria R. Lau, Christian Paech, Robert B. Reynolds, Charles R. Wilson, Shiow-Shong Yang
  • Bacillus lentus alkaline protease variants with increased stability
    Patent number: 5340735
    Abstract: Mutant B. lentus DSM 5483 proteases are derived by the replacement of at least one amino acid residue of the mature form of the B. lentus DSM 5483 alkaline protease. The mutant proteases are expressed by genes which are mutated by site-specific mutagenesis. The amino acid sites selected for replacement are identified by means of a computer based method which compares the three dimensional structure of the wild-type protease and a reference protease.
    Type: Grant
    Filed: May 29, 1991
    Date of Patent: August 23, 1994
    Assignee: COGNIS, Inc.
    Inventors: Teresa Christianson, Dean Goddette, Beth F. Ladin, Maria R. Lau, Christian Paech, Robert B. Reynolds, Charles R. Wilson, Shiow-Shong Yang
  • Novel thermostable pullulanase enzyme and method for its production
    Patent number: 4628028
    Abstract: This invention relates to a pullulanase enzyme exhibiting thermostability at a pH of about 5 which is derived from thermophilic, obligately anaerobic bacterium. T. brockii, and to a process for its production. The pullulanase is useful for preparation of maltotriose and for conversion of starch to maltose syrups.
    Type: Grant
    Filed: May 23, 1985
    Date of Patent: December 9, 1986
    Assignee: CPC International Inc.
    Inventors: Dennis M. Katkocin, Nancy W. Zeman, Shiow-Shong Yang
  • Novel thermostable, aciduric alpha-amylase and method for its production
    Patent number: 4578352
    Abstract: This invention relates to an alpha-amylase enzyme exhibiting thermostability at an acidic pH which is derived from a spore-forming, thermophilic, anaerobic bacterium and to a process for its production. This alpha-amylase is especially useful for the preparation of glucose-containing syrups from starch.
    Type: Grant
    Filed: July 13, 1983
    Date of Patent: March 25, 1986
    Assignee: CPC International Inc.
    Inventors: Dennis M. Katkocin, Nancy S. Word, Shiow-Shong Yang
  • Thermostable glucoamylase and method for its production
    Patent number: 4536477
    Abstract: This invention relates to a glucoamylase enzyme exhibiting thermostability at pH values between 6 and 7 which is derived from a spore-forming, thermophilic, anaerobic bacterium and to a process for its production. The glucoamylase is especially useful for the preparation of glucose-containing syrups from starch.
    Type: Grant
    Filed: August 17, 1983
    Date of Patent: August 20, 1985
    Assignee: CPC International Inc.
    Inventors: Dennis M. Katkocin, Nancy S. Word, Shiow-Shong Yang