Granted Patent
Utility
US 6,233,187 · App. 09/490,597
Semiconductor memory device
Inventor:
Tomohiro Tsuchiya
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: Jan 25, 2000
Inventor
Tomohiro Tsuchiya
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.