IP Library › Granted Patent US 6,500,403
Granted Patent Utility
US 6,500,403 · App. 09/814,926

Process for the production of hydrogen

Inventor: Andrew Mark Ward
Patented Case View Patent ↗
Granted: Dec 31, 2002 Filed: Mar 23, 2001
Inventor
Andrew Mark Ward
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED

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 6,500,403
App. No.
09/814,926
Filed
2001-03-23
Granted
2002-12-31
Kind
B2