Granted Patent
Utility
US 4,463,200 · App. 06/056,346
Process for the production of perchloroethylene by catalytic oxychlorination
Inventors:
William O. Beard, Jr., Charles R. Cupit, Patricia H. Moyer
Patented Case
View Patent ↗
Granted: Jul 31, 1984
Filed: Jul 10, 1979
Inventors
William O. Beard, Jr.
Charles R. Cupit
Patricia H. Moyer
Assignee (at issue)
Vulcan Materials Company
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.