IP Library Granted Patent US 4,500,424
Granted Patent Utility
US 4,500,424 · App. 06/482,920

Desulfurization catalyst and process

Inventors: Howard D. Simpson, Ryden L. Richardson, Kenneth Baron
Patented Case View Patent ↗
Granted: Feb 19, 1985 Filed: Apr 7, 1983
Inventors
Howard D. Simpson
Ryden L. Richardson
Kenneth Baron
Assignee (at issue)
Union Oil Company of California

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 4,500,424
App. No.
06/482,920
Filed
1983-04-07
Granted
1985-02-19
Kind
A