Patents by Inventor John P. Szykowski

John P. Szykowski 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 containing dual additive combination for low temperature viscosity improvement
    Patent number: 4957650
    Abstract: There is disclosed a lubricating oil composition containing a dual additive combination for reducing the low temperature viscosity properties thereof. Such additive combination comprises a Component A, e.g., a polymethacrylate or esterified styrene/maleic anhydride copolymer and a Component B, e.g., sorbitan tristearate.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: September 18, 1990
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Albert Rossi, John P. Szykowski, Robert D. Tack
  • Lubricating oil composition containing dual additive combination for low temperature viscosity improvement (PTF-004)
    Patent number: 4826615
    Abstract: There is disclosed a lubricating oil composition containing a dual additive combination for reducing the low temperature viscosity properties thereof. Such additive combination comprises a Component A, e.g., a polymethacrylate or esterified styrene/maleic anhydride copolymer and a Component B, e.g., sorbitan tristearate.
    Type: Grant
    Filed: August 10, 1988
    Date of Patent: May 2, 1989
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Albert Rossi, John P. Szykowski, Robert D. Tack
  • Biodegradable seal swell additive with low toxicity properties for automatic transmission fluids, power transmission fluids and rotary engine oil applications
    Patent number: 3974081
    Abstract: A fluid having a mineral lubricating oil base and containing an oil soluble, saturated aliphatic or aromatic hydrocarbon ester having from 10 to 60 carbon atoms which, if desired, can be used in combination with an aliphatic alcohol of from 8 to 13 carbon atoms. The ester alone and ester-alcohol combination imparts to the fluid the property of swelling seals in automatic transmissions, power transmissions and rotary engines, and thereby improves retention of the fluid in these mechanical structures.
    Type: Grant
    Filed: July 31, 1974
    Date of Patent: August 10, 1976
    Assignee: Exxon Research and Engineering Company
    Inventors: Alfred J. Rutkowski, John P. Szykowski