Granted Patent
Utility
US 4,459,191 · App. 06/333,941
Light-catalyzed process for preparing amines
Inventors:
David M. Gardner, Richard V. Gutowski
Patented Case
View Patent ↗
Granted: Jul 10, 1984
Filed: Dec 23, 1981
Inventors
David M. Gardner
Richard V. Gutowski
Assignee (at issue)
Pennwalt Corporation
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.