Patents by Inventor Rudy W. Gunnerman

Rudy W. Gunnerman 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).

  • Preparation of heat barrier materials
    Patent number: 3944685
    Abstract: Heat barrier materials are prepared by forming an intimate admixture of alkaline earth sulfate and finely divided carbonaceous material into a shaped composition and subjecting said shaped composition to a high temperature to cause a surface reaction to produce a coating comprising alkaline earth sulfide on the surface of said shaped composition.
    Type: Grant
    Filed: June 28, 1971
    Date of Patent: March 16, 1976
    Assignee: Plastonium, Inc.
    Inventor: Rudy W. Gunnerman