Patents by Inventor Roy W. Roth

Roy W. Roth 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).

  • Making absorbable surgical felt
    Patent number: 4128612
    Abstract: Tissue absorbable synthetic polymeric fibers, such as polyglycolic acid, are felted to form a thin mat with at least one, and preferably both, surfaces compacted by contact with a heated embossing surface such as a hot roller. Porosity is reduced but the compacted felt retains its flexibility, and conforms readily to the surface of a bleeding wound to give effective rapid hemostasis. The hemostatic felt is conveniently but not necessarily allowed to remain in place during the healing process and is absorbed by living tissue.
    Type: Grant
    Filed: November 3, 1975
    Date of Patent: December 5, 1978
    Assignee: American Cyanamid Company
    Inventor: Roy W. Roth