Patents by Inventor Marvin J. Gilliam

Marvin J. Gilliam 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).

  • Grey water recirculation system with odor prevention
    Patent number: 5452956
    Abstract: A limited amount of grey water is collected in a storage tank for use in flushing toilets. During use, the grey water in the storage tank is stirred to discharge small particulate solids with the grey water supplied to a toilet. The stirring also prevents the grey water from stratifying and preventing disinfectant from reaching stratified grey water which in the absence of disinfectant and stirring could become stagnant. The stirring action of the grey water also makes the system self cleaning.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: September 26, 1995
    Inventor: Marvin J. Gilliam