IP Library › Granted Patent US 5,137,980
Granted Patent Utility
US 5,137,980 · App. 07/801,488

Ashless dispersants formed from substituted acylating agents and their production and use

Inventors: David J. Degonia, Paul G. Griffin
Patented Case View Patent ↗
Granted: Aug 11, 1992 Filed: Dec 2, 1991
Inventors
David J. Degonia
Paul G. Griffin
Assignee (at issue)
Ethyl Petroleum Additives, Inc.

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Quick Facts
Patent No.
US 5,137,980
App. No.
07/801,488
Filed
1991-12-02
Granted
1992-08-11
Kind
A