Patents by Inventor Alfred J. Rutkowski

Alfred J. Rutkowski 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).

  • 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