Granted Patent
Utility
US 5,219,685 · App. 07/845,846
Alkaline manganese cell
Inventors:
Yasuyoshi Taniguchi, Koji Koide, Tsugiyasu Iwamaru
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Mar 6, 1992
Inventors
Yasuyoshi Taniguchi
Koji Koide
Tsugiyasu Iwamaru
Assignee (at issue)
HITACHI MAXELL, 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.