Patents by Inventor Armgard K. Everett

Armgard K. Everett 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).

  • Lubricating oil composition
    Patent number: 5164102
    Abstract: Engine wear and sludge are reduced by using in the engine crankcase a formulated motor oil containing a small amount of the combination of (i) an overbased alkaline earth metal sulfonate having a total base number of at least 100, (ii) a zinc dihydrocarbyl dithiophosphate, (iii) a sulfurized carboxylic acid ester, and (iv) a sulfurized fatty acid amide, ester or ester-amide of an oxyalkylated amine or mixtures thereof.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: November 17, 1992
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Armgard K. Everett, Edmund F. Perozzi
  • Lubricating oil composition
    Patent number: 5028345
    Abstract: Lubricant compositions comprising an oil of lubricating viscosity and a cosulfurized blend of (a) a carboxylic acid ester material and (b) an ester, amide, ester-amide or fatty amine derivative which contains at least one polar substituent group such as amino and hydroxyl.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: July 2, 1991
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Armgard K. Everett, Edmund F. Perozzi
  • Lubricating oil composition
    Patent number: 4960530
    Abstract: Engine wear and sludge are reduced by using in the engine crankcase a fomulated motor oil containing a small amount of a cosulfurized blend of a carboxylic acid ester material and a fatty acid oxyalkylated amine derivative selected from fatty acid amides, fatty acid esters, and fatty acid ester-amides of said oxyalkylated amine and mixtures thereof.
    Type: Grant
    Filed: December 7, 1988
    Date of Patent: October 2, 1990
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Armgard K. Everett, Edmund F. Perozzi
  • Lubricating oil composition
    Patent number: 4960528
    Abstract: Engine wear and sludge are reduced by using in the engine crankcase a formulated motor oil containing a small amount of the combination of (i) an overbased alkaline earth metal sulfonate having a total base number of at least 100, (ii) a zinc dihydrocarbyl dithiophosphate, (iii) a sulfurized carboxylic acid ester, and (iv) a sulfurized fatty acid amide, ester or ester-amide of an oxyalkylated amine or mixtures thereof.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: October 2, 1990
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Armgard K. Everett, Edmund F. Perozzi