Patents by Inventor Sam S. Stier

Sam S. Stier 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).

  • Prefabricated, slip-resistant surface coating
    Patent number: 4931330
    Abstract: The invention relates to a prefabricated, slip-resistant surface coating which comprises a sheet member having a film on its surface, said film embedded therein in plurality of finely divided abrasive particles. This coating can be adapted to make a bathtub surface slip-resistant.
    Type: Grant
    Filed: March 29, 1988
    Date of Patent: June 5, 1990
    Inventors: Sam S. Stier, Robert E. Kaufman