Patents by Inventor Richard P. Herrle

Richard P. Herrle 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).

  • Inhibiting the growth of zebra mussels
    Patent number: 5288409
    Abstract: Growth of zebra mussels on a surface is inhibited by making the surface from an unsaturated polyester having copolymerized therein about 1-40% N-phenyl maleimide.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: February 22, 1994
    Assignee: Aristech Chemical Corporation
    Inventors: Richard P. Herrle, Virginia Piermattie