Patents by Inventor Peter A. Hahn

Peter A. Hahn 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).

  • Enzymes bound to polyurethane
    Patent number: 4342834
    Abstract: To chemically bind either impure or purified enzymes to polyurethane to produce insolubilized bound enzymes which are still enzymically active and which may be more stable than the original enzyme, and which can be reused without appreciable activity loss and whose physical characteristics can be varied depending on the application for which they are intended.
    Type: Grant
    Filed: May 11, 1976
    Date of Patent: August 3, 1982
    Assignee: W. R. Grace & Co.
    Inventors: Louis L. Wood, Frank J. Hartdegen, Peter A. Hahn
  • Preparation and use of enzymes bound to polyurethane
    Patent number: 4312946
    Abstract: To chemically bind either impure or purified enzymes to polyurethane to produce insolubilized bound enzymes which are still enzymically active and which may be more stable than the original enzyme, and which can be reused without appreciable activity loss and whose physical characteristics can be varied depending on the application for which they are intended.
    Type: Grant
    Filed: May 21, 1973
    Date of Patent: January 26, 1982
    Assignee: W. R. Grace & Co.
    Inventors: Louis L. Wood, Frank J. Hartdegen, Peter A. Hahn
  • Ammonium and potassium isobutyrates as pathogen growth inhibitors and growth stimulators
    Patent number: 3958009
    Abstract: This invention is the use of ammonium and potassium isobutyrates as a means for inhibiting the growth of plant and animal pathogenic and non-pathogenic organisms. Another effect of this invention is the improvement in the rate of weight gain in animals which have been treated with these isobutyrates.
    Type: Grant
    Filed: June 30, 1975
    Date of Patent: May 18, 1976
    Assignee: W. R. Grace & Co.
    Inventors: Paul D. Lepore, Peter A. Hahn
  • Milk production
    Patent number: 3956482
    Abstract: The invention involves feeding certain rumen microorganisms to dairy cattle to increase milk production, butter fat, and non-fat milk solids. The microorganisms are especially cultured on and adapted to a high concentrate nutrient medium.
    Type: Grant
    Filed: April 7, 1975
    Date of Patent: May 11, 1976
    Assignee: W. R. Grace & Co.
    Inventors: Peter A. Hahn, Kamal M. Abdo