Granted Patent
Utility
US 6,133,586 · App. 08/825,172
Semiconductor memory device and method of fabricating the same
Inventor:
Hiroaki Ohkubo
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Mar 28, 1997
Inventor
Hiroaki Ohkubo
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.