Patents by Inventor Douglas C. Riddell

Douglas C. Riddell 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).

  • Patent number: 4896627
    Abstract: An ant proof pet dish includes a base receptacle, and an intermediate receptacle overlying and completely covering an open top surface of said base receptacle and spaced slightly thereabove. An upper receptacle is supported slightly above the intermediate receptacle. In use, the base receptacle is filled with a fluid such as water or a non toxic insect inhibiting fluid. The intermediate receptacle is filled with water for a pet to drink and the other receptacle is filled with pet food. The animal is prevented from accessing the base receptacle, which forms a fluid filled moat to prevent ants and other crawling insects from accessing the water and food receptacles. An outwardly extending projection may be formed on the base receptacle and provided with a removable cover to enable filling of the base receptacle with a fluid. A plurality of cooperating posts and sockets are utilized to removably secure the receptacles in a parallel slightly spaced relation.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: January 30, 1990
    Inventor: Douglas C. Riddell