Patents by Inventor Andrew F. Hyde

Andrew F. Hyde 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).

  • Litter box accessory
    Patent number: 5220886
    Abstract: A litter box accessory wherein a generally concave grate is seated over the base of a tray. The tray is removable and hinged to a litter box to prevent the scattering of cat litter about the home from either an animal kicking or tracking it out of the litter box. The concave grate is made up of a checkerboard pattern of pyramidal protrusions and circular spaces for passage of debris therethrough.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: June 22, 1993
    Inventor: Andrew F. Hyde