Granted Patent
Utility
US 5,869,867 · App. 08/814,992
FET semiconductor integrated circuit device having a planar element structure
Inventor:
Kiyoshi Takeuchi
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Mar 14, 1997
Inventor
Kiyoshi Takeuchi
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.