Patents by Inventor William R. Olund

William R. Olund 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).

  • Archery target
    Patent number: 4850596
    Abstract: There are disclosed foamable compositions comprising at least one polyisocyanate, at least one polyhydroxy compound and at least one blowing agent having evenly distributed therethrough discrete particles of cellular rubber. The resulting urethane foam-cellular rubber is suitable for use as a target backstop, e.g., archery target backstop.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: July 25, 1989
    Inventor: William R. Olund