Granted Patent
Utility
US 4,965,384 · App. 07/348,058
Production of copper amine salt complexes for catalysts for the oxidative coupling of alkylphenols
Inventors:
Michael Duane Cliffton, Stephen J. Carter
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: May 5, 1989
Inventors
Michael Duane Cliffton
Stephen J. Carter
Assignee (at issue)
Amoco 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.