Granted Patent
Utility
US 6,335,880 · App. 09/881,020
Nonvolatile semiconductor memory
Inventors:
Masataka Kato, Tetsuo Adachi, Toshihiro Tanaka, Toshio Sasaki, Hitoshi Kume, Katsutaka Kimura
Patented Case
View Patent ↗
Granted: Jan 1, 2002
Filed: Jun 15, 2001
Inventors
Masataka Kato
Tetsuo Adachi
Toshihiro Tanaka
Toshio Sasaki
Hitoshi Kume
Katsutaka Kimura
Assignee (at issue)
HITACHI, 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.