Patents by Inventor W. Sheffield

W. Sheffield 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).

  • Dual fueled burner gun
    Patent number: 4412808
    Abstract: The present invention resides in a dual fueled burner gun providing reduced production of oxides of nitrogen. The gun operates in a gaseous fueled mode when it is charged with a gaseous fuel or in a liquid fueled mode when it is charged with a liquid fuel. The gun may also operate in a gaseous/liquid fueled mode in which it is charged with both the gaseous and liquid fuels.
    Type: Grant
    Filed: June 19, 1980
    Date of Patent: November 1, 1983
    Assignee: TRW Inc.
    Inventors: Douglas B. Sheppard, James A. Kezerle, Ellis W. Sheffield
  • Manganese dioxide
    Patent number: 4277360
    Abstract: A homogeneous manganese dioxide composition having on a microscopic scale domains of alpha and delta manganese dioxide is manufactured by reacting a manganese-oxygen containing composition with a sodium containing composition at elevated temperature followed by acid treatment.
    Type: Grant
    Filed: March 28, 1979
    Date of Patent: July 7, 1981
    Assignee: Union Carbide Corporation
    Inventors: Geoffrey W. Mellors, Glenn W. Sheffield