Patents by Inventor Philip Boyd

Philip Boyd 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).

  • Carbonaceous friction materials
    Patent number: 5965658
    Abstract: The instant invention provides a non-asbestos friction material and method of making therefor having from about 2 to 20 wt % of carbonaceous fibers. The remainder of the friction material is an auxiliary material and a thermosetting resin. The carbonaceous fibers are derived from oxidized polyacrylonitrile based fibers. The wt % of bond carbon in the carbonaceous fibers is about 65 to 80.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: October 12, 1999
    Assignee: R.K Carbon Fibers Inc.
    Inventors: W. Novis Smith, Philip Boyd