Granted Patent
Utility
US 6,140,540 · App. 08/043,646
Hydrogenation of aromatic amines to produce their ring hydrogenated counterparts
Inventors:
Gamini Ananda Vedage, Richard S. Myers, John N. Armor
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Apr 6, 1993
Inventors
Gamini Ananda Vedage
Richard S. Myers
John N. Armor
Assignee (at issue)
Air Products and Chemicals, Inc.
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.