Granted Patent
Utility
US 6,162,676 · App. 09/144,504
Method of making a semiconductor device with an etching stopper
Inventor:
Hidemitsu Mori
Patented Case
View Patent ↗
Granted: Dec 19, 2000
Filed: Aug 31, 1998
Inventor
Hidemitsu Mori
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.