Granted Patent
Utility
US 6,689,177 · App. 09/814,632
Nonaqueous-electrolyte secondary battery and method of manufacturing the same
Inventors:
Tsuyoshi Sugiyama, Tatsuo Onozaki, Takashi Ono
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Mar 22, 2001
Inventors
Tsuyoshi Sugiyama
Tatsuo Onozaki
Takashi Ono
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.