Granted Patent
Utility
US 6,399,241 · App. 09/421,936
Nonaqueous electrolyte battery
Inventors:
Tomitaro Hara, Tsuyonobu Hatazawa, Kazuhito Hatsuta
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: Oct 21, 1999
Inventors
Tomitaro Hara
Tsuyonobu Hatazawa
Kazuhito Hatsuta
Assignee (at issue)
SONY GROUP 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.