Granted Patent
Utility
US 6,590,808 · App. 10/288,334
Non-volatile multi-level semiconductor flash memory device and method of driving same
Inventors:
Naoki Yamada, Hiroshi Sato, Tetsuya Tsujikawa, Kazuyuki Miyazawa
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Nov 6, 2002
Inventors
Naoki Yamada
Hiroshi Sato
Tetsuya Tsujikawa
Kazuyuki Miyazawa
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.