Patents by Inventor Robert D. Gendreau

Robert D. Gendreau 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).

  • Wastewater treating apparatus
    Patent number: 5582680
    Abstract: A compact, transportable and self-contained apparatus for treating wastewater containing as impurities and pollutants various non-volatile (at water boiling points) fluids such as greases, oils and soaps, having a vessel/evaporator for receiving the wastewater, a heater below the evaporator to heat the wastewater admixture and boil off the water, a collector to draw off the non-volatile fluids from substantially the entire height of the water evaporator, and automatic refill/shutdown control devices for the apparatus.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: December 10, 1996
    Assignee: Raymond E. Vankouwenberg
    Inventors: Raymond E. Vankouwenberg, Robert D. Gendreau