Granted Patent
Utility
US 6,656,635 · App. 09/972,395
Non-aqueous electrolyte secondary cell
Inventors:
Tsuyoshi Okawa, Mamoru Hosoya, Junji Kuyama, Yuzuru Fukushima
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Oct 5, 2001
Inventors
Tsuyoshi Okawa
Mamoru Hosoya
Junji Kuyama
Yuzuru Fukushima
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.