Granted Patent
Utility
US 6,081,171 · App. 09/057,299
Monolithic filters utilizing thin film bulk acoustic wave devices and minimum passive components for controlling the shape and width of a passband response
Inventor:
Juha Ellä
Patented Case
View Patent ↗
Granted: Jun 27, 2000
Filed: Apr 8, 1998
Inventor
Juha Ellä
Assignee (at issue)
Nokia Mobile Phones 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.