Patents by Inventor Harold L. Griffin

Harold L. Griffin 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).

  • Industrial alkaline protease from shipworm bacterium
    Patent number: 5474700
    Abstract: A protease has been isolated from a symbiotic bacterium found in the gland of Deshayes of the marine shipworm. The protease remains active over the pH range of about 4-12, exhibits salt tolerance up to 3M sodium chloride, retains a high level of activity above 50.degree. C. for at least 60 min, and is stimulated by oxidizing agents, particularly perborate. The properties of this protease suggest widespread utility in detergents and other low-temperature industrial applications.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: December 12, 1995
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Harold L. Griffin, Richard V. Greene, Michael A. Cotta
  • Industrial alkaline protease from shipworm bacterium
    Patent number: 5312749
    Abstract: A protease has been isolated from a symbiotic bacterium found in the gland of Deshayes of the marine shipworm. The protease remains active over the pH range of about 4-12, exhibits salt tolerance up to 3M sodium chloride, retains a high level of activity above 50.degree. C. for at least 60 min, and is stimulated by oxidizing agents, particularly perborate. The properties of this protease suggest widespread utility in detergents and other low-temperature industrial applications.
    Type: Grant
    Filed: May 12, 1992
    Date of Patent: May 17, 1994
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Harold L. Griffin, Richard V. Grene, Michael A. Cotta