IP Library Granted Patent US 5,241,003
Granted Patent Utility
US 5,241,003 · App. 07/895,001

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 31, 1993 Filed: Jun 8, 1992
Inventors
David J. Degonia
Paul G. Griffin
Assignee (at issue)
Ethyl Petroleum Additives, Inc.

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 5,241,003
App. No.
07/895,001
Filed
1992-06-08
Granted
1993-08-31
Kind
A