IP Library › Granted Patent US 4,464,481
Granted Patent Utility
US 4,464,481 · App. 06/526,235

Hydrocracking catalyst

Inventors: Lee Hilfman, Mark J. O'Hara
Patented Case View Patent ↗
Granted: Aug 7, 1984 Filed: Aug 25, 1983
Inventors
Lee Hilfman
Mark J. O'Hara
Assignee (at issue)
UOP LLC

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 4,464,481
App. No.
06/526,235
Filed
1983-08-25
Granted
1984-08-07
Kind
A