Granted Patent
Utility
US 6,558,438 · App. 09/620,816
Method for producing a pressurized package for a film packed battery
Inventors:
Masaharu Satoh, Norihide Ohyama, Masato Shirakata, Tomokazu Kumeuchi, Hiroshi Yageta, Ryuichi Shimizu, Yutaka Bannai
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Jul 21, 2000
Inventors
Masaharu Satoh
Norihide Ohyama
Masato Shirakata
Tomokazu Kumeuchi
Hiroshi Yageta
Ryuichi Shimizu
Yutaka Bannai
Assignees (at issue)
NEC CORPORATION
NEC Tokin Tochigi, 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.