Granted Patent
Utility
US 5,781,489 · App. 08/866,270
Semiconductor storage device
Inventor:
Toshiharu Okamoto
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: May 30, 1997
Inventor
Toshiharu 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.