Patents by Inventor Walter W. Perkins

Walter W. Perkins 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).

  • Porcelain tower packing
    Patent number: 4155960
    Abstract: The inclusion of 15 to 35% by weight of very fine alumina to a clay and flux containing mix for the manufacture of ceramic saddles, for use as tower packing, results in highly acid resistant packing elements.
    Type: Grant
    Filed: March 2, 1977
    Date of Patent: May 22, 1979
    Assignee: Norton Company
    Inventors: William H. Gerdes, Walter W. Perkins