Patents by Inventor William R. Ashcraft

William R. Ashcraft 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).

  • Protected glassy phosphate detergent additive
    Patent number: 4113644
    Abstract: Substantially anhydrous glassy phosphate detergent additives are disclosed comprising from 1% to 90% by weight of a glassy phosphate and 10% to 99% by weight of a protective agent being a solid organic material having a melting point ranging from 110.degree. F to 200.degree. F. Preferably the solid organic material has a low hygroscopicity in order to minimize exposure of the glassy phosphate to moisture during storage.
    Type: Grant
    Filed: November 11, 1975
    Date of Patent: September 12, 1978
    Inventor: William R. Ashcraft