Patents by Inventor Gordon R. Schierberg

Gordon R. Schierberg 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).

  • Diesel crankcase lubricant composition
    Patent number: 4282107
    Abstract: A diesel crankcase lubricant composition containing a non-CO.sub.2 blown 2:1 calcium hydroxide overbased calcium salt of a sulfurized alkylphenolate, an alkenyl succinimide and a pour depressant in a mineral oil base. The composition has excellent silver frictional control without requiring incorporation of a silver friction modifier.
    Type: Grant
    Filed: September 26, 1979
    Date of Patent: August 4, 1981
    Assignee: Texaco Inc.
    Inventors: Benjamin H. Zoleski, Rodney L. Sung, Gordon R. Schierberg, Gayle P. Hebert
  • Froth flotation with petroleum oxidate-amine compositions
    Patent number: 4238409
    Abstract: Disclosed are cationic flotation agents for separating silica from ores consisting of the monocarboxylic acid salts of polyalkylene polyamine amides wherein the amide is completely neutralized.
    Type: Grant
    Filed: July 19, 1979
    Date of Patent: December 9, 1980
    Assignee: Texaco Inc.
    Inventors: Orville W. Rigdon, Gordon R. Schierberg, Lawrence H. Keon