Granted Patent
Utility
US 6,437,667 · App. 09/497,880
Method of tuning thin film resonator filters by removing or adding piezoelectric material
Inventors:
Bradley Paul Barber, Linus Albert Fetter, George Rittenhouse, Michael G. Zierdt
Patented Case
View Patent ↗
Granted: Aug 20, 2002
Filed: Feb 4, 2000
Inventors
Bradley Paul Barber
Linus Albert Fetter
George Rittenhouse
Michael G. Zierdt
Assignee (at issue)
Agere Systems Guardian 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.