Patents by Inventor Christopher Ringer

Christopher Ringer 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 .alpha.-amylase
    Patent number: 5958739
    Abstract: Novel .alpha.-amylase enzymes are disclosed in which one or more asparagine residues are substituted with a different amino acid or deleted. The disclosed .alpha.-amylase enzymes show altered or improved low pH starch hydrolysis performance, stability and activity profiles.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: September 28, 1999
    Assignee: Genencor International Inc.
    Inventors: Colin Mitchinson, Carol Requadt, Traci Ropp, Leif P. Solheim, Christopher Ringer, Anthony Day