Patents by Inventor Paul C. Isenberg

Paul C. Isenberg 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).

  • Injection molding of long fiber reinforced thermoplastics
    Patent number: 6159589
    Abstract: An injection molded fiber-impregnated thermoplastic composite material comprising a plastic polymer matrix wherein the fibers are sufficiently interwoven and entangled in said polymer matrix to provide improved resistance to mechanical loading, and wherein said composite material is particularly suited for the preparation of an injection molded toe cap for a protective shoe.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: December 12, 2000
    Assignee: H.H. Brown Shoe Company
    Inventors: Paul C. Isenberg, Christopher J. Beard, Nick R. Schott