Patents by Inventor Rick L. Yoder

Rick L. Yoder 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).

  • Clumping cellulosic animal litter
    Patent number: 6662749
    Abstract: Clumping cellulosic animal litter comprising a cellulosic substrate coated with a first coating of a dual adhesive and surface active agent, and a second coating of guar gum, and the method of making such particles.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: December 16, 2003
    Assignee: Kadant Fibergen, Inc.
    Inventors: Robert V. Wiedenhaft, Rick L. Yoder
  • Method of making enhanced non-clay granules made from pulp or paper sludge
    Patent number: 5770138
    Abstract: An improved granule product derived from pulp or paper sludge or other fibrous plant materials prepared by adjusting the moisture content of raw pulp or paper sludge, reducing the fiber size of the sludge, agitating the sludge to cause cellulosic fibers to interlock and bond to form granules, tumbling the granules in a rolling device and then drying the granules.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: June 23, 1998
    Assignee: Thermo Fibergen, Inc.
    Inventor: Rick L. Yoder