Patents by Inventor Lewis M. Fetterman

Lewis M. Fetterman 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 treatment system with simultaneous separation of phosphorus and manure solids
    Patent number: 7674379
    Abstract: Wastewater treatment systems and processes for removal of solids, pathogens, nitrogen, and phosphorus from municipal and agricultural wastewater include the simultaneous separation of solids and phosphorus from wastewater and industrial effluents.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: March 9, 2010
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Matias B. Vanotti, Ariel A. Szogi, Lewis M. Fetterman
  • Wastewater treatment system with simultaneous separation of phosphorus and manure solids
    Publication number: 20080314837
    Abstract: Wastewater treatment systems and processes for removal of solids, pathogens, nitrogen, and phosphorus from municipal and agricultural wastewater include the simultaneous separation of solids and phosphorus from wastewater and industrial effluents.
    Type: Application
    Filed: June 19, 2007
    Publication date: December 25, 2008
    Inventors: Matias B. Vanotti, Ariel A. Szogi, Lewis M. Fetterman
  • Method for the treatment of animal waste and products made therefrom
    Publication number: 20030141245
    Abstract: A method of treating animal waste includes separating the solids by flocculation and dissolved air flow, followed by screening of the solids to separate them from the waste water. The resulting solid portion is used as the basis for manufacturing value-added products including organic fertilizer, liquid fertilizer, soil amendments and soilless media.
    Type: Application
    Filed: February 7, 2002
    Publication date: July 31, 2003
    Inventors: Lewis M. Fetterman, C. Ray Campbell