Granted Patent
Utility
US 6,714,098 · App. 09/914,263
SAW antenna duplexer having a phase shifter with less than 50 ohm characteristic impedance
Inventors:
Kazushi Nishida, Katsuya Fujii, Ichiro Kameyama, Toru Sakuragawa, Hiroshi Fujinaka
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Oct 19, 2001
Inventors
Kazushi Nishida
Katsuya Fujii
Ichiro Kameyama
Toru Sakuragawa
Hiroshi Fujinaka
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.