IP Library › Granted Patent US 4,376,222
Granted Patent Utility
US 4,376,222 · App. 06/218,068

Chemical process

Inventors: Ronald L. Shubkin, Marguerite S. Baylerian
Patented Case View Patent ↗
Granted: Mar 8, 1983 Filed: Dec 19, 1980
Inventors
Ronald L. Shubkin
Marguerite S. Baylerian
Assignee (at issue)
Ethyl Corporation

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 4,376,222
App. No.
06/218,068
Filed
1980-12-19
Granted
1983-03-08
Kind
A