Granted Patent
Utility
US 5,398,205 · App. 08/239,555
Semiconductor memory device having trench in which word line is buried
Inventor:
Shinsuke Yamaguchi
Patented Case
View Patent ↗
Granted: Mar 14, 1995
Filed: May 9, 1994
Inventor
Shinsuke Yamaguchi
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.