Granted Patent
Utility
US 6,664,640 · App. 10/199,592
Semiconductor device
Inventor:
Junko Kohno
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Jul 19, 2002
Inventor
Junko Kohno
Assignee (at issue)
NEC Compound Semiconductor Devices, Ltd.
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.