Patents by Inventor John James Usher

John James Usher 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 penicillin G acylases
    Patent number: 6403356
    Abstract: New mutant penicillin G acylases preferably from E. coli are provided, exhibiting altered enzymatic activity. These penicillin G acylases are obtained by expression of a gene encoding said penicillin G acylase having an amino acid sequence which differs at least in one amino acid from the wild-type penicillin G acylase.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: June 11, 2002
    Assignee: Bristol-Myers Squibb Co.
    Inventors: Li You, John James Usher, Brenda Joyce White, Jiri Novotny