Patents by Inventor Graydon Wayne Killingbeck

Graydon Wayne Killingbeck 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).

  • Styrene polymer foam and the preparation thereof
    Patent number: 4085073
    Abstract: Stable medium density large cell size styrene polymer foam is extruded in large sections employing as blowing agents: chlorofluoromethane, bromochlorodifluoromethane alone or in admixture with minor quantities of other halogen containing carbon compounds to provide machinable foams of good dimensional stability.
    Type: Grant
    Filed: November 2, 1976
    Date of Patent: April 18, 1978
    Assignee: The Dow Chemical Company
    Inventors: Kyung W. Suh, Graydon Wayne Killingbeck