Patents by Inventor Elizabeth Slone

Elizabeth Slone 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).

  • Cat litter box for toilet
    Patent number: D739617
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: September 22, 2015
    Inventor: Elizabeth Slone
  • Cat litter box for toilet
    Patent number: D789002
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: June 6, 2017
    Inventor: Elizabeth Slone