Granted Patent
Utility
US 5,371,391 · App. 07/992,829
MOS semiconductor device and method of fabricating the same
Inventor:
Yasuo Sato
Patented Case
View Patent ↗
Granted: Dec 6, 1994
Filed: Dec 21, 1992
Inventor
Yasuo Sato
Assignee (at issue)
NIPPON STEEL 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.