Patents by Inventor Eric W. Vessey

Eric W. Vessey 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).

  • Surface treated silica
    Patent number: 4029513
    Abstract: Microfine silicas that are useful as rubber reinforcing fillers and thickening agents, and are readily dispersible are prepared by modifying the surface layer of the silica. The surface modification results from including in or affixing to the surface of the silica certain inorganic polyvalent ions.
    Type: Grant
    Filed: June 11, 1975
    Date of Patent: June 14, 1977
    Assignee: Philadephia Quartz Company
    Inventors: Eric W. Vessey, James R. Miller, Klaus Robert Lange