Patents by Inventor Richard C. Heymann

Richard C. Heymann 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).

  • Compositions containing anti-microbial agents and methods for making and using same
    Patent number: 5554373
    Abstract: Compositions containing anti-microbial agents and methods for making and using same are provided. Chemical controllers are added to the compositions for controlling the rate of release of the anti-microbial agents. The chemical controllers include vitamin E. A blend of anti-microbial agents can be included in the composition for destroying and inhibiting the growth of a wide variety of different microorganisms including bacteria, viruses, and fungi. Specifically, vitamin E has been found to control the rate of release of 10, 10'-oxybisphenoxarsine (OBPA) and 2-(4'-thiazolyl) benzimadazole (TBZ). The anti-microbial agent(s) and the vitamin E are incorporated into polymeric materials. The polymeric materials can be formed into films, sheets, or tubing. Vitamin E controls the rate of migration of the anti-microbial agents so that harmful amounts of the anti-microbial agents are not released.
    Type: Grant
    Filed: November 5, 1993
    Date of Patent: September 10, 1996
    Inventors: Samuel G. Seabrook, Richard C. Heymann