Patents by Inventor William L. Copling

William L. Copling 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).

  • Concrete compositions
    Patent number: 4308068
    Abstract: The addition of a mixture of sodium silicate and a nonionic surfactant to a pre-concrete mix results in concrete having greater compressive strength. When the mix additionally contains sawdust and clay, light weight, insulative building material, which applicant calls INSUL-WOOD, is provided.
    Type: Grant
    Filed: July 11, 1980
    Date of Patent: December 29, 1981
    Inventor: William L. Copling