Granted Patent
Utility
US 5,600,043 · App. 08/411,023
Oxychlorination process
Inventors:
Victor J. Johnston, Joseph A. Cowfer
Patented Case
View Patent ↗
Granted: Feb 4, 1997
Filed: Mar 27, 1995
Inventors
Victor J. Johnston
Joseph A. Cowfer
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.