Patents by Inventor Keith Stanley Downing

Keith Stanley Downing 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).

  • Cutting edges coated with polyfluorocarbon polymer
    Patent number: 4102046
    Abstract: The present invention is concerned with incorporating bis-(chloroalkyl) vinyl phosphonates in polyfluorocarbon coatings to improve the adhesion of such polyfluorocarbon coatings to cutting edges and especially to razor blade cutting edges, said cutting edges having outer surfaces of alumina, silica, tungsten, titanium, or tantalum.
    Type: Grant
    Filed: May 2, 1977
    Date of Patent: July 25, 1978
    Assignee: The Gillette Company
    Inventors: Keith Stanley Downing, Richard Johnston