Inventor
SAKURAGAWA TORU
JP14 patents
⚠️ This page may combine multiple inventors who share the name “SAKURAGAWA TORU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
13 patentsUS6472953B1Oct 29, 2002
Band switching filter using a surface acoustic wave resonator and an antenna duplexer using the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD62 citations96
US6404302B1Jun 11, 2002
Surface acoustic wave filter utilizing a transmission line with phase characteristics that increase filter out of band attenuation
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD67 citations96
US5907265AMay 25, 1999
High-frequency circuit board trace crossing and electronic component therefor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD73 citations94
US7034634B2Apr 25, 2006
Surface acoustic wave (SAW) resonator, SAW filter and SAW antenna duplexer using the SAW resonator
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations92
US6759924B2Jul 6, 2004
Multi-frequency antenna duplexer
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD37 citations92
US6445261B1Sep 3, 2002
Saw filter antenna sharing device using the same, and mobile communication terminal using the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD26 citations92
US6310422B1Oct 30, 2001
Surface acoustic wave filter
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD39 citations92
US6297580B1Oct 2, 2001
Surface acoustic wave device and production method thereof and mobile communication equipment using it
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD45 citations91
US6891449B2May 10, 2005
Antenna duplexer
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD13 citations83
US7138890B2Nov 21, 2006
Surface acoustic wave (SAW) resonator SAW filter and SAW antenna duplexer using the SAW resonator
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations74
US6909341B2Jun 21, 2005
Surface acoustic wave filter utilizing a layer for preventing grain boundary diffusion
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations72
US6714098B2Mar 30, 2004
SAW antenna duplexer having a phase shifter with less than 50 ohm characteristic impedance
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations71
US7106150B2Sep 12, 2006
Surface acoustic wave filter
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD0 citations51