Granted Patent
Utility
US 6,444,357 · App. 09/572,444
Non-aqueous electrolyte secondary battery
Inventors:
Chika Kambe, Kouichi Zama
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: May 17, 2000
Inventors
Chika Kambe
Kouichi Zama
Assignee (at issue)
NEC TOKIN CORPORATION
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.