Patents by Inventor John W. Ypma

John W. Ypma 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).

  • Canine biscuits containing an inorganic pyrophosphate
    Patent number: 5094870
    Abstract: Process for preparing dog biscuits which contain at least one inorganic pyrophosphate salt. The dog biscuits containing at least one inorganic pyrophosphate salt are chewed and/or eaten by dogs, with the result that tartar accumulations on their teeth are reduced or prevented.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: March 10, 1992
    Assignee: Nabisco Brands, Inc.
    Inventors: Felice Scaglione, Lorna C. Staples, John W. Ypma