Granted Patent
Utility
US 6,249,457 · App. 09/401,272
Nonvolatile memory device and inspection method therefor
Inventor:
Yuji Okamoto
Patented Case
View Patent ↗
Granted: Jun 19, 2001
Filed: Sep 23, 1999
Inventor
Yuji Okamoto
Assignee (at issue)
NEC CORPORATION
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.