Granted Patent
Utility
US 6,083,644 · App. 08/978,825
Non-aqueous electrolyte secondary battery
Inventors:
Shunji Watanabe, Shinichi Takasugi, Tsugio Sakai, Kensuke Tahara, Akifumi Sakata, Hideharu Onodera
Patented Case
View Patent ↗
Granted: Jul 4, 2000
Filed: Nov 26, 1997
Inventors
Shunji Watanabe
Shinichi Takasugi
Tsugio Sakai
Kensuke Tahara
Akifumi Sakata
Hideharu Onodera
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.