Granted Patent
Utility
US 4,985,318 · App. 07/358,118
Alkaline battery with a nickel electrode
Inventors:
Masahiko Oshitani, Keiichi Hasegawa, Hiroshi Yufu
Patented Case
View Patent ↗
Granted: Jan 15, 1991
Filed: May 30, 1989
Inventors
Masahiko Oshitani
Keiichi Hasegawa
Hiroshi Yufu
Assignee (at issue)
Yuasa Battery Co., 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.