Granted Patent
Utility
US 5,795,814 · App. 08/609,953
Method for manufacturing semiconductor device having groove-type isolation area
Inventor:
Kazuhiro Tasaka
Patented Case
View Patent ↗
Granted: Aug 18, 1998
Filed: Mar 4, 1996
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.