Patents by Inventor Harold C. Pris

Harold C. Pris 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).

  • Animal litter composition
    Patent number: 4258660
    Abstract: An animal litter composition in pelletized form comprising straw as the major ingredient, sunflower hulls and dried alfalfa as minor constituents, and with a suitable binder.
    Type: Grant
    Filed: November 8, 1979
    Date of Patent: March 31, 1981
    Assignee: Leo Froelich
    Inventors: Harold C. Pris, Leo Froelich