Patents by Inventor Darwin J. Longhart

Darwin J. Longhart 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).

  • Building material sheeting
    Patent number: 5574080
    Abstract: A building material including reclaimed leather, neoprene, and nylon. The reclaimed materials are shredded and blended together with a matrix material. The matrix material is a polymeric adhesive. The chips with the matrix material are heated to form a uniform mixture. The uniform mixture is then molded into the building material sheets.
    Type: Grant
    Filed: December 26, 1995
    Date of Patent: November 12, 1996
    Inventor: Darwin J. Longhart