Granted Patent
Utility
US 6,521,376 · App. 09/718,406
Non-aqueous liquid electrolyte cell
Inventors:
Tadashi Sakata, Yoshifumi Sakamoto, Masanori Sugano, Akira Asada, Keiji Nakamura, Megumu Takai
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: Nov 24, 2000
Inventors
Tadashi Sakata
Yoshifumi Sakamoto
Masanori Sugano
Akira Asada
Keiji Nakamura
Megumu Takai
Assignee (at issue)
HITACHI MAXELL, 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.