Granted Patent
Utility
US 6,501,682 · App. 09/894,133
Nonvolatile semiconductor memory device
Inventor:
Keiichi Yoshida
Patented Case
View Patent ↗
Granted: Dec 31, 2002
Filed: Jun 29, 2001
Inventor
Keiichi Yoshida
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.