Granted Patent
Utility
US 6,222,269 · App. 08/996,105
Semiconductor device and fabrication process thereof
Inventor:
Tatsuya Usami
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Dec 22, 1997
Inventor
Tatsuya Usami
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.