Granted Patent
Utility
US 6,150,221 · App. 09/026,494
Semiconductor device and method for manufacturing same
Inventor:
Tohru Aoyama
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Feb 20, 1998
Inventor
Tohru Aoyama
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.