Patents by Inventor Harmon L. Hoffman

Harmon L. Hoffman 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).

  • Ligament and tendon prosthesis of polyethylene terephthalate and method of preparing same
    Patent number: 4209859
    Abstract: Prosthesis suitable for replacing or supplementing damaged ligaments or tendons are prepared from polyethylene terephthalate strips by treating such strips with a shrinking agent under restraint in the longitudinal direction. The treatment reduces substantially the extensibility of the fabric in the longitudinal direction. Stiffness can be imparted to the strips by forming the strips into tubes which may have longitudinally-extending ridges thereon and heat-setting same.
    Type: Grant
    Filed: March 29, 1978
    Date of Patent: July 1, 1980
    Assignee: Meadox Medicals, Inc.
    Inventor: Harmon L. Hoffman