Granted Patent
Utility
US 4,802,959 · App. 07/062,637
Electrosynthesis of persulfate
Inventor:
Marek Lipsztajn
Patented Case
View Patent ↗
Granted: Feb 7, 1989
Filed: Jun 16, 1987
Inventor
Marek Lipsztajn
Assignee (at issue)
Tenneco Canada 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.