Granted Patent
Utility
US 5,292,703 · App. 07/920,721
Catalyst and process for oxychlorination of ethylene to EDC
Inventors:
George H. Young, Joseph A. Cowfer, Victor J. Johnston
Patented Case
View Patent ↗
Granted: Mar 8, 1994
Filed: Jul 28, 1992
Inventors
George H. Young
Joseph A. Cowfer
Victor J. Johnston
Assignee (at issue)
The Geon 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.