Patents by Inventor Carwin B. Cluff

Carwin B. Cluff 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).

  • Wax saturated expanded polystyrene and method of manufacture
    Patent number: 4079170
    Abstract: Wax saturated expanded polystyrene or other type of open-cell foamed product and method of manufacture for increasing its surface and/or body compressive and tensile strengths rendering the resulting product effective as a building material.
    Type: Grant
    Filed: July 8, 1977
    Date of Patent: March 14, 1978
    Inventor: Carwin B. Cluff