Patents by Inventor Robert T. Ehrlich

Robert T. Ehrlich 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).

  • Method for treatment of animal waste
    Patent number: 6375844
    Abstract: Waste from confined animal feeding/growing operation is flushed from barn and routed to an enclosed anaerobic digester. A liquid portion of the digested waste is further treated with aerobic digestion and then clarified liquid is used to flush the barn and restart the cycle. High water volume used for frequent flushing of the barn combined with enclosed anaerobic digestion leads to control of odors.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: April 23, 2002
    Inventor: Robert T. Ehrlich
  • Water treatment system
    Patent number: 5545330
    Abstract: A water treatment system and process separates contaminants from water by flotation, by forming a removable floating scum of impurities utilizing a bubbling process, by filtering out suspended solids, by stripping dissolved impurities from the water with air, by oxidizing organic compounds, by adsorbing organic compounds, and finally, by disinfecting. Utilization of the disclosed process and system will transform contaminated water into an environmentally suitable state.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: August 13, 1996
    Assignee: Amerada Hess Corporation
    Inventor: Robert T. Ehrlich