Patents by Inventor Karl C. Kauffman

Karl C. Kauffman 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).

  • Method of obtaining strong and durable adhesion to rubber through chemical covalent bonds
    Patent number: 4337111
    Abstract: Unvulcanized or partially vulcanized rubber is coated with a coating poly capable of co-vulcanizing with the rubber and having functional groups capable of reacting with an adhesive. The coated rubber is then subjected to vulcanizing conditions. When the treated rubber surface is bonded to an adhesive, the functional groups react with the adhesive forming strong bonds.
    Type: Grant
    Filed: October 2, 1978
    Date of Patent: June 29, 1982
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Karl C. Kauffman, Martin H. Kaufman
  • Polymerization process
    Patent number: 3962375
    Abstract: A method of preparing polybutadiene polymers utilizing a three-component system consisting of an organoaluminum compound, an organonickel compound and a fluoride compound selected from the group of hydrogen fluoride and its complexes and boron trifluoride and its compounds, the improvement being mixing the catalyst components in the presence of a preforming agent selected from the group of monoolefins, nonconjugated diolefins, cyclic nonconjugated multiolefins, acetylenic hydrocarbons, triolefins, vinyl ethers and aromatic nitriles.
    Type: Grant
    Filed: April 11, 1975
    Date of Patent: June 8, 1976
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Morford C. Throckmorton, Ken W. Donbar, Karl C. Kauffman