Patents by Inventor David W. Eggerding

David W. Eggerding 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).

  • Friction reducing lubricating oil composition
    Patent number: 5114603
    Abstract: A lubricating oil composition which includes partial esters of glycerol substantially free from glycerol are disclosed. The partial esters of glycerol are present in an amount of about 0.05 to about one percent by weight, and include less than about 1 weight percent of unreacted glycerol based on the total weight of glycerol esters and free glycerol present. Enhanced reduction in friction and improved stability are obtained.
    Type: Grant
    Filed: March 27, 1989
    Date of Patent: May 19, 1992
    Assignee: Amoco Corporation
    Inventors: Steven Kennedy, David W. Eggerding, Lionel D. Moore
  • Method for preparing engine seal compatible dispersant for lubricating oils comprising reacting hydrocarbyl substituted discarboxylic compound with aminoguanirise or basic salt thereof
    Patent number: 5080815
    Abstract: A dispersant composition having improved compatibility with fluorohydrocarbon-containing elastomeric engine seals, said dispersant composition comprising the reaction product obtained by reacting a C.sub.30 -C.sub.250 hydrocarbyl-substituted succinic anhydride with aminoguanidine, or a basic salt thereof, at a reaction temperature of from about 155.degree. C. to about 200.degree. C.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: January 14, 1992
    Assignee: Amoco Corporation
    Inventors: David J. Fenoglio, Paula R. Vettel, David W. Eggerding