Granted Patent
Utility
US 6,765,456 · App. 10/015,606
Surface acoustic wave duplexer and portable communication device using the same
Inventors:
Hisanori Ehara, Kazushige Noguchi, Satoshi Terada, Tomokazu Komazaki
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Dec 17, 2001
Inventors
Hisanori Ehara
Kazushige Noguchi
Satoshi Terada
Tomokazu Komazaki
Assignee (at issue)
OKI ELECTRIC INDUSTRY CO., 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.