Patents by Inventor Yong-Qiang Shen

Yong-Qiang Shen 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).

  • Enzymatic production of cefaclor from cephalexin
    Patent number: 5939299
    Abstract: An enzyme preparation that exhibits cephalosporin chloroperoxidase activity is isolatable from a microorganism species of the Rathayibacter genus. This enzyme preparation can convert cephalexin to cefaclor in a single step. A particular, unique microorganism that can provide the cephalosporin chloroperoxidase enzyme preparation is Rathayibacter biopuresis.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: August 17, 1999
    Assignee: Biopure Corporation
    Inventors: Bing L. Wong, Yong-Qiang Shen, Yung-Pin Chen
  • Rathayibacter biopuresis produces cephalosporin haloperoxidase
    Patent number: 5854054
    Abstract: An enzyme preparation that exhibits cephalosporin haloperoxidase activity is isolatable from a microorganism species of the Rathayibacter genus. This enzyme preparation can convert cephalexin to a halogenated cephalosporin antibiotic in a single step. A particular, unique microorganism that can provide the cephalosporin haloperoxidase enzyme preparation is Rathayibacter biopuresis.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: December 29, 1998
    Assignee: Biopure Corporation
    Inventors: Bing L. Wong, Yong-Qiang Shen, Yung-Pin Chen
  • Chlorination of cephalexin with chloroperoxidase from Rathayibacter biopuresis
    Patent number: 5695951
    Abstract: An enzyme preparation that exhibits cephalosporin chloroperoxidase activity is isolatable from a microorganism species of the Rathayibacter genus. This enzyme preparation can convert cephalexin to cefaclor in a single step. A particular, unique microorganism that can provide the cephalosporin chloroperoxidase enzyme preparation is Rathayibacter biopuresis.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: December 9, 1997
    Assignee: Biopure Corporation
    Inventors: Bing L. Wong, Yong-Qiang Shen, Yung-Pin Chen
  • Halogenation of cephalexin with haloperoxidase from Rathayibacter biopuresis
    Patent number: 5589354
    Abstract: An enzyme preparation that exhibits cephalosporin haloperoxidase activity is isolatable from a microorganism species of the Rathayibacter genus. This enzyme preparation can convert cephalexin to a halogenated cephalosporin antibiotic in a single step. A particular, unique microorganism that can provide the cephalosporin haloperoxidase enzyme preparation is Rathayibacter biopuresis.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: December 31, 1996
    Assignee: Biopure Corporation
    Inventors: Bing L. Wong, Yong-Qiang Shen, Yung-Pin Chen