IP Library › Granted Patent US 5,071,919
Granted Patent Utility
US 5,071,919 · App. 07/524,422

Substituted acylating agents and their production

Inventors: David J. Degonia, Paul G. Griffin
Patented Case View Patent ↗
Granted: Dec 10, 1991 Filed: May 17, 1990
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 5,071,919
App. No.
07/524,422
Filed
1990-05-17
Granted
1991-12-10
Kind
A