Patents by Inventor Robert J. Spence

Robert J. Spence 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).

  • Breast prosthesis with improved biocompatibility and method of making the same
    Patent number: 4772284
    Abstract: A single lumen implantable and biocompatible breast prosthesis composed of an outer membrane of silastic, medical grade silicone, and an inner filling material selected from the group consisting of purified reconstituted collagen gel and a purified gel of poly-alpha amino acid homopolymers or random copolymers having a molecular weight of from 5,000 to 400,000. The purified reconstituted collagen gel has a collagen concentration of from 20 to 100 milligrams per milliliter of gel.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: September 20, 1988
    Assignee: Collagenix Corporation
    Inventors: Steven R. Jefferies, Robert J. Spence