IP Library Granted Patent US 4,846,961
Granted Patent Utility
US 4,846,961 · App. 07/139,618

Hydroprocessing catalyst with a Ni-P-Mo

Inventors: Paul R. Robinson, Howard D. Simpson
Patented Case View Patent ↗
Granted: Jul 11, 1989 Filed: Dec 30, 1987
Inventors
Paul R. Robinson
Howard D. Simpson
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 4,846,961
App. No.
07/139,618
Filed
1987-12-30
Granted
1989-07-11
Kind
A