Inventor
KOMAZAKI TOMOKAZU
JP36 patents
⚠️ This page may combine multiple inventors who share the name “KOMAZAKI TOMOKAZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OKI ELECTRIC IND CO LTD
29 patentsUS6377140B1Apr 23, 2002
Saw resonator filter with bridged-T configuration
OKI ELECTRIC IND CO LTD170 citations98
US5905418AMay 18, 1999
Surface-acoustic-wave filters with poles of attenuation created by impedance circuits
OKI ELECTRIC IND CO LTD97 citations97
US5525942AJun 11, 1996
LC-type dielectric filter and duplexer
OKI ELECTRIC IND CO LTD92 citations94
US6937113B2Aug 30, 2005
Branching filter package
OKI ELECTRIC IND CO LTD20 citations92
US6870440B2Mar 22, 2005
Saw branching filter with a branching filter circuit formed on the package
OKI ELECTRIC IND CO LTD17 citations92
US6765456B2Jul 20, 2004
Surface acoustic wave duplexer and portable communication device using the same
OKI ELECTRIC IND CO LTD22 citations92
US6677835B2Jan 13, 2004
Saw filter with an attenuation pole including a band-pass ladder type of saw filter having a saw resonator
OKI ELECTRIC IND CO LTD35 citations92
US6489861B2Dec 3, 2002
Antenna duplexer with divided and grounded transmission line
OKI ELECTRIC IND CO LTD28 citations92
USRE37639EApr 9, 2002
Surface-acoustic-wave filters with poles of attenuation created by impedance circuits
OKI ELECTRIC IND CO LTD25 citations92
US6222426B1Apr 24, 2001
Branching filter with a composite circuit of an LC circuit and a serial arm saw resonator
OKI ELECTRIC IND CO LTD41 citations92
US6208223B1Mar 27, 2001
Receiving filter of a saw separator with greater electrode interdigitated width in first stage parallel resonator
OKI ELECTRIC IND CO LTD25 citations91
US5715527AFeb 3, 1998
Mobile communication device having an output power sensor succeeding a transmission filter
OKI ELECTRIC IND CO LTD46 citations91
US5525954AJun 11, 1996
Stripline resonator
OKI ELECTRIC IND CO LTD42 citations90
US7479845B2Jan 20, 2009
Branching filter package
OKI ELECTRIC IND CO LTD8 citations84
US5486799AJan 23, 1996
Strip line filter and duplexer filter using the same
OKI ELECTRIC IND CO LTD19 citations80
US5015973AMay 14, 1991
Duplexer with an isolating circuit on a dielectric plate
OKI ELECTRIC IND CO LTD20 citations80
US5323127AJun 21, 1994
Branching filter having specific impedance and admittance characteristics
OKI ELECTRIC IND CO LTD13 citations73
US5227747AJul 13, 1993
Dielectric filter having coupling amount adjusting patterns
OKI ELECTRIC IND CO LTD18 citations73
US5150089ASep 22, 1992
Dielectric filter having an attenuation pole tunable to a predetermined frequency
OKI ELECTRIC IND CO LTD17 citations73
US5097237AMar 17, 1992
Microstrip line type resonator
OKI ELECTRIC IND CO LTD12 citations72
US4891615AJan 2, 1990
Dielectric filter with attenuation pole
OKI ELECTRIC IND CO LTD17 citations72
US4768003AAug 30, 1988
Microwave filter
OKI ELECTRIC IND CO LTD14 citations66
US7242271B2Jul 10, 2007
Saw filter circuit
OKI ELECTRIC IND CO LTD6 citations63
US5015974AMay 14, 1991
Isolating circuit and dielectric filter for use therein
OKI ELECTRIC IND CO LTD5 citations62
US6911878B2Jun 28, 2005
Acoustic wave branching filter having transmitting filter with optimal power handling
OKI ELECTRIC IND CO LTD2 citations61
US6960966B2Nov 1, 2005
Surface acoustic wave filter with attenuation poles
OKI ELECTRIC IND CO LTD0 citations52
US7420440B2Sep 2, 2008
Transmitting filter including SAW resonators
OKI ELECTRIC IND CO LTD0 citations51
US6861925B2Mar 1, 2005
Surface acoustic wave filter
OKI ELECTRIC IND CO LTD0 citations51
US7034392B2Apr 25, 2006
Duplexer
OKI ELECTRIC IND CO LTD0 citations38
OKI SEMICONDUCTOR CO LTD
4 patentsUS7893794B2Feb 22, 2011
Branching filter package
OKI SEMICONDUCTOR CO LTD6 citations73
US7679472B2Mar 16, 2010
Branching filter package
OKI SEMICONDUCTOR CO LTD3 citations73
US7602263B2Oct 13, 2009
Branching filter package
OKI SEMICONDUCTOR CO LTD3 citations62
US7859362B2Dec 28, 2010
Branching filter package
OKI SEMICONDUCTOR CO LTD0 citations52