Granted Patent
Utility
US 6,512,277 · App. 09/153,945
Semiconductor memory device and fabrication thereof
Inventor:
Kazuhiro Tasaka
Patented Case
View Patent ↗
Granted: Jan 28, 2003
Filed: Sep 16, 1998
Inventor
Kazuhiro Tasaka
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.