Patents by Inventor Leo Froelich

Leo Froelich 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).

  • Apparatus for refinishing a pelletizing die
    Patent number: 4543750
    Abstract: An apparatus for refinishing a pellet-making die includes a revolvable turntable upon which the pellet-making die is positioned. A vertically shiftable grinder mechanism having a grinder stone engages the inner surface of the die and makes successive vertical strokes across the surface to be refinished. An acme threaded screw actuator controls the depth of cut made by the grinder mechanism.
    Type: Grant
    Filed: July 19, 1984
    Date of Patent: October 1, 1985
    Inventor: Leo Froelich
  • 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