Patents by Inventor Howard M. Duck

Howard M. Duck 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).

  • Portable flush toilet and enclosure
    Patent number: 5913610
    Abstract: A portable flush toilet and enclosure comprises an operating mode and a storage mode. In the operating mode, a flush toilet inside a personnel enclosure or cabana is connected to a first waste tank external to the enclosure. A second waste tank external to the enclosure receives liquid waste from the first waste tank. The second waste tank provides flush fluid to the flush tank. In the storage mode, the first waste tank and the second waste tanks are disconnected from the flush toilet and flush tank and stored within the enclosure.
    Type: Grant
    Filed: February 7, 1998
    Date of Patent: June 22, 1999
    Assignee: PolyPortables, Inc.
    Inventor: Howard M. Duck