Patents by Inventor William R. Herrera

William R. Herrera 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).

  • Patent number: 5032082
    Abstract: A denture adhesive removing head is affixed to one end of an elongated handle. The head has several lines of projections extending from a common surface. The outer ends of the projections lie on a convexly curved surface. The head and projections are molded from a material that is pliable when warm and relatively rigid when cooled.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: July 16, 1991
    Inventor: William R. Herrera
  • Patent number: 4247286
    Abstract: A first hinge member has a serrated shank affixed to a dental restoration section and a spherical pivot-head at the free end of the shank; a pair of oppositely-open, axially-aligned, hemispherical bearing cups are provided on the pivot head for engagement by hemispherical trunnions provided on the inner wall of a substantially spherical cap forming part of a second hinge member affixed to a clasp section engaging an abutment tooth; a downwardly-open semi-cylindrical stop member is affixed to the cap in overlying relationship with the free end of the shank for engagement thereby to limit relative movement between the restoration section and the endentulous ridge portion of a user's mouth.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: January 27, 1981
    Inventors: William R. Herrera, Alex F. Presley