Granted Patent
Utility
US 6,509,813 · App. 09/761,171
Bulk acoustic wave resonator with a conductive mirror
Inventors:
Juha Ellä, Jyrki Kaitila
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Jan 16, 2001
Inventors
Juha Ellä
Jyrki Kaitila
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.