Patents by Inventor Glen D. Schaaf

Glen D. Schaaf 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).

  • Hinged rigid or semirigid product
    Patent number: 5059476
    Abstract: A hinged flexible article is provided which has rigid or semirigid substrate means with an insert of a hinge material which permits repeated flexing of the article about the hinge without failure. The substrate means has a hardness of at least about 35 Shore D as measured by ASTM test D-2240, while the hinge material has a hardness of from about 25 to about 60 Shore D as measured by ASTM test D-2240.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: October 22, 1991
    Assignee: The B. F. Goodrich Company
    Inventors: John L. Steiniger, Glen D. Schaaf, William S. Greenlee, Elaine A. Mertzel