Granted Patent
Utility
US 5,149,606 · App. 07/667,878
Method of treating a battery electrode with persulfate
Inventors:
Norma K. Bullock, Ralph Petersen
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Mar 12, 1991
Inventors
Norma K. Bullock
Ralph Petersen
Assignee (at issue)
Globe-Union 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.