Granted Patent
Utility
US 6,235,427 · App. 09/309,309
Nonaqueous secondary battery containing silicic material
Inventors:
Yoshio Idota, Akihiro Matsufuji, Nobufumi Mori, Akira Kase, Yoshikatsu Kagawa, Hajime Miyamoto
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: May 11, 1999
Inventors
Yoshio Idota
Akihiro Matsufuji
Nobufumi Mori
Akira Kase
Yoshikatsu Kagawa
Hajime Miyamoto
Assignee (at issue)
Fujitsu Limited
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.