Granted Patent
Utility
US 5,294,305 · App. 08/057,557
Ethylene glycol recovery process
Inventors:
Frank Craft, Michael D. Kelly
Patented Case
View Patent ↗
Granted: Mar 15, 1994
Filed: May 6, 1993
Inventors
Frank Craft
Michael D. Kelly
Assignee (at issue)
Mobile Process Technology, Co.
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.