Granted Patent
Utility
US 5,620,812 · App. 08/511,068
Non-aqueous electrolyte secondary battery
Inventors:
Kensuke Tahara, Fumiharu Iwasaki, Seiji Yahagi, Akifumi Sakata, Tsugio Sakai, Hideki Ishikawa, Shinichi Takasugi
Patented Case
View Patent ↗
Granted: Apr 15, 1997
Filed: Aug 3, 1995
Inventors
Kensuke Tahara
Fumiharu Iwasaki
Seiji Yahagi
Akifumi Sakata
Tsugio Sakai
Hideki Ishikawa
Shinichi Takasugi
Assignee (at issue)
SEIKO INSTRUMENTS 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.