Patents by Inventor Mark R. Groening

Mark R. Groening 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: 5752543
    Abstract: A drum containment dolly for liquid waste containment drums. The drum containment dolly has a containment vessel having a volume that is greater than the volume of the containment drum carried by the dolly. As such, should a leak form in the drum, the dolly fully retains all the liquid waste leaked from the liquid waste containment drum. Specifically, the drum containment dolly has a polygonal base, a plurality of side panels attached to the base to form the containment vessel, and means for moving the drum containment dolly. In a particular embodiment of the invention, a plurality of wheels are attached to a hexagonal base and the liquid waste containment drum is positioned vertically relative to the hexagonal base.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: May 19, 1998
    Inventor: Mark R. Groening