Granted Patent
Utility
US 6,653,913 · App. 09/826,699
Tunable piezoelectric filter arrangement using a dielectric material with a voltage-dependent dielectric constant
Inventors:
Mareike Klee, Robert F. Milsom, Hans-Peter Löbl, Rainer Kiewitt, Uwe Mackens, Martinus Hermanus Wilhelmus Maria Van Delden, Wilhelm Hermann, Olaf Wunnicke
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Apr 5, 2001
Inventors
Mareike Klee
Robert F. Milsom
Hans-Peter Löbl
Rainer Kiewitt
Uwe Mackens
Martinus Hermanus Wilhelmus Maria Van Delden
Wilhelm Hermann
Olaf Wunnicke
Assignee (at issue)
KONINKLIJKE PHILIPS ELECTRONICS NV
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.