Patents Represented by Attorney Theodore V. Kowalchun

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  • Mixed ethylene alpha olefin copolymer multifunctional viscosity modifiers useful in lube oil compositions
    Patent number: 5427702
    Abstract: The present invention relates to novel multifunctional viscosity modifiers comprising a mixture of derivatized ethylene-alpha olefin copolymers, A and B. Said A copolymer comprising from about 30 to about 60 weight percent monomer units derived from ethylene and said B copolymer comprising from about 60 to about 80 weight percent units derived from ethylene.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: June 27, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: David Y. Chung, Paul Brice, Steven J. Searis, Mark J. Struglinski, John B. Gardiner