Granted Patent
Utility
US 6,509,798 · App. 09/888,179
Variable gain amplifier
Inventor:
Hidehiko Kuroda
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Jun 22, 2001
Inventor
Hidehiko Kuroda
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.