Granted Patent
Utility
US 6,207,039 · App. 09/277,560
Process for recovering onium hydroxides or onium salts from solutions containing onium compounds using electrochemical ion exchange
Inventors:
Roger Moulton, David R. Hulme
Patented Case
View Patent ↗
Granted: Mar 27, 2001
Filed: Mar 26, 1999
Inventors
Roger Moulton
David R. Hulme
Assignee (at issue)
SACHEM, INC.
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.