Patents by Inventor Roy William Roth

Roy William 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).

  • Medical sponges
    Patent number: 4040884
    Abstract: Hydrophilic sponges adapted for medical uses comprising texturized polyurethane foams embossed with various fused designs, a method for the production thereof and packages containing the same, are disclosed.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: August 9, 1977
    Assignee: American Cyanamid Company
    Inventor: Roy William Roth
  • Medical sponges
    Patent number: 3977406
    Abstract: Hydrophilic sponges adapted for medical uses comprising texturized polyurethane foams embossed with various fused designs.
    Type: Grant
    Filed: June 19, 1974
    Date of Patent: August 31, 1976
    Assignee: American Cyanamid Company
    Inventor: Roy William Roth
  • Compacted surgical hemostatic felt
    Patent number: 3937223
    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: April 19, 1974
    Date of Patent: February 10, 1976
    Assignee: American Cyanamid Company
    Inventor: Roy William Roth