Patents by Inventor David S. Shreve

David S. Shreve 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).

  • Rubber polymerases and methods for their production and use
    Patent number: 4638028
    Abstract: Substantially pure rubber polymerase and analogues thereof are disclosed. Substantially pure rubber polymerase is isolated and purified from chemically stabilized Hevea brasiliensis latex. The analogues exhibit substantial homology to the Hevea brasiliensis polymerase or function in an enzymatically equivalent manner. Methods for the isolation and purification of a rubber polymerase are set forth. Use of substantially pure rubber polymerase to produce natural rubber or related copolymers is also disclosed.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: January 20, 1987
    Assignee: Goodyear Tire & Rubber Company
    Inventors: Joseph H. Lui, David S. Shreve