Granted Patent
Utility
US 6,677,080 · App. 09/925,669
Non-aqueous electrolyte secondary cell
Inventors:
Hiroaki Tanizaki, Atsuo Omaru
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Aug 9, 2001
Inventors
Hiroaki Tanizaki
Atsuo Omaru
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.