Granted Patent
Utility
US 6,790,338 · App. 10/315,755
Electrolytic process for preparing metal sulfonates
Inventors:
George P. Kinstle, Alex Magdics, Thomas E. Nappier
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Dec 6, 2002
Inventors
George P. Kinstle
Alex Magdics
Thomas E. Nappier
Assignee (at issue)
O-M LTD.
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.