IP Library › Granted Patent US 4,672,048
Granted Patent Utility
US 4,672,048 · App. 06/793,566

Hydrocracking catalyst

Inventor: John W. Ward
Patented Case View Patent ↗
Granted: Jun 9, 1987 Filed: Oct 31, 1985
Inventor
John W. Ward
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 4,672,048
App. No.
06/793,566
Filed
1985-10-31
Granted
1987-06-09
Kind
A