Patents by Inventor Carl P. Wellman

Carl P. Wellman 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).

  • Disposable container with litter for animals
    Patent number: 4271787
    Abstract: A plurality of self-contained feline litter boxes is housed in stacked relation within a container having peripheral upright walls. Each litter box includes a removable top cover which, when withdrawn, exposes the contained litter material. As each litter box becomes soiled, the box is removed from the container and disposed of. The cover of the subjacent box is then removed, making fresh litter material available. The upstanding walls prevent any litter material from being scattered outside the container by the feline user.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: June 9, 1981
    Inventors: Gary L. Wellman, Carl P. Wellman, Naomi M. Wellman