Patents by Inventor Elmer E. Schallenberg

Elmer E. Schallenberg 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).

  • Sulfurized overbased calcium alkylphenolate lubricant composition
    Patent number: 4171270
    Abstract: Lubricant oil comprising a hydrocarbon oil of lubricating viscosity, a sulfurized overbased calcium alkylphenolate detergent-inhibitor having a calcium metal to alkylphenol ratio of at least 2.9:2; and a sulfurized naphthenic base oil-contaning composition having a sulfur content of from 1 percent to 6 percent by weight.
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: October 16, 1979
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Benjamin H. Zoleski, Herbert C. Morris, Elmer E. Schallenberg