Granted Patent
Utility
US 6,579,646 · App. 09/181,500
Storage battery
Inventors:
Yasuyuki Yoshihara, Yoshihiro Murata, Takashi Hattori, Akira Inanobe
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Oct 28, 1998
Inventors
Yasuyuki Yoshihara
Yoshihiro Murata
Takashi Hattori
Akira Inanobe
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.