IP Library › Granted Patent US 4,510,037
Granted Patent Utility
US 4,510,037 · App. 06/565,248

Hydrogenation process for solid carbonaceous feed materials using thermal countercurrent flow reaction zone

Inventors: Edwin S. Johanson, Paul D. Schuler
Patented Case View Patent ↗
Granted: Apr 9, 1985 Filed: Dec 23, 1983
Inventors
Edwin S. Johanson
Paul D. Schuler
Assignee (at issue)
HRI

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 4,510,037
App. No.
06/565,248
Filed
1983-12-23
Granted
1985-04-09
Kind
A