Granted Patent
Utility
US 4,483,757 · App. 06/601,831
Photochemical process for preparing amines
Inventors:
David M. Gardner, Paul J. McElligott, Jr.
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Apr 19, 1984
Inventors
David M. Gardner
Paul J. McElligott, Jr.
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.