Patents by Inventor Stephen D. Gorham

Stephen D. Gorham 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: 4614794
    Abstract: Complexes of polyanionic plant polysaccharides with biodegradable proteins, or proteolytic degradation products thereof, are useful in the formation of wound dressings and surgical implants, such as sutures, blood vessel grafts, and artificial organs. The biodegradable protein is preferably collagen, and the polysaccharide is preferably sodium alginate. The complexes are preferably formed by combining the protein and the polysaccharide at a pH which is no higher than the isoelectric point of the protein. The complexes may be crosslinked, such as by dehydrothermal crosslinking or by the use of chemical crosslinking agents such as aldehydes or carbodiimides. Multivalent cations may also be incorporated in the complex in order to give added strength.
    Type: Grant
    Filed: September 24, 1984
    Date of Patent: September 30, 1986
    Assignee: Johnson & Johnson
    Inventors: Ian A. Easton, Stephen D. Gorham