Granted Patent
Utility
US 6,490,441 · App. 09/553,893
Tuning circuit device with built-in band pass integrated on semiconductor substrate together with PLL circuit
Inventor:
Hitoshi Saito
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Apr 20, 2000
Inventor
Hitoshi Saito
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.