Granted Patent
Utility
US 5,523,616 · App. 08/328,456
Semiconductor device having laminated tight and coarse insulating layers
Inventor:
Yasuhide Den
Patented Case
View Patent ↗
Granted: Jun 4, 1996
Filed: Oct 25, 1994
Inventor
Yasuhide Den
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.