Patents by Inventor Dean Silver

Dean Silver 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).

  • Feline litter box
    Patent number: 5988108
    Abstract: There is provided a ventilation assembly unit for a feline litter box. The unit comprises a housing containing a fan at the base thereof. A filtering medium is contained in a canister adapted for removal and insertion within the housing. The filtering medium comprises, in combination, an air dispersing mesh covered with a layer of particulate carbon.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: November 23, 1999
    Inventor: Dean Silver