Inventor · disambiguated record
Osamu Kawachi
Also filed as: KAWACHI OSAMU
55 granted patents·5 pending applications·701 citations·filing 1995–2019
98Inventor score
Files withFUJITSU MEDIA DEVICES LTD25TAIYO YUDEN KK16FUJITSU LTD13FUJITSU MEDIA DEVICES LIMTED1KAWACHI OSAMU1
Top patents by PatentIndex Score
60 records- 0192US6037847ASurface acoustic wave device using a leaky surface acoustic wave with an optimized cut angle of a piezoelectric substrateFUJITSU LTD·Filed 1996·Granted Mar 14, 2000·74 cites·24 claims
- 0291US7215223B2Surface acoustic wave deviceFUJITSU MEDIA DEVICES LTD·Filed 2005·Granted May 8, 2007·38 cites·2 claims
- 0391US5874869ASurface acoustic wave filter device on 40° to 42° rotated Y-X LITAO3FUJITSU LTD·Filed 1997·Granted Feb 23, 1999·74 cites·19 claims
- 0489US6759928B2Surface acoustic wave device with divided interdigital transducersFUJITSU MEDIA DEVICES LTD·Filed 2002·Granted Jul 6, 2004·56 cites·6 claims
- 0587US9825612B2MultiplexerTAIYO YUDEN KK·Filed 2015·Granted Nov 21, 2017·6 cites·9 claims
- 0686US6483402B2Surface acoustic wave deviceFUJITSU MEDIA DEVICES LTD·Filed 2000·Granted Nov 19, 2002·32 cites·24 claims
- 0786US5631515ASurface acoustic wave deviceFUJITSU LTD·Filed 1995·Granted May 20, 1997·60 cites·35 claims
- 0884US10826461B2Acoustic wave deviceTAIYO YUDEN KK·Filed 2017·Granted Nov 3, 2020·4 cites·9 claims
- 0983US7227429B2Surface acoustic wave device and method of fabricating the sameFUJITSU LTD·Filed 2004·Granted Jun 5, 2007·20 cites·20 claims
- 1080US11595019B2Acoustic wave resonator, filter, and multiplexerTAIYO YUDEN KK·Filed 2019·Granted Feb 28, 2023·3 cites·10 claims
- 1180US6417574B1Surface-acoustic-wave device for flip-chip mountingFUJITSU MEDIA DEVICES LIMTED·Filed 2000·Granted Jul 9, 2002·43 cites·12 claims
- 1279US9751109B2Acoustic wave device and method of fabricating the sameTAIYO YUDEN KK·Filed 2014·Granted Sep 5, 2017·5 cites·10 claims
- 1379US7176599B2Surface acoustic wave device and method of producing the sameFUJITSU MEDIA DEVICES LTD·Filed 2004·Granted Feb 13, 2007·23 cites·3 claims
- 1479US6388545B1Surface-acoustic-wave filter having an improved suppression outside a pass-bandFUJITSU LTD·Filed 1999·Granted May 14, 2002·55 cites·28 claims
- 1578US6498548B2Surface acoustic wave filter with optimized width and pitch of interdigital electrodes and reflector electrodesFUJITSU MEDIA DEVICES LTD·Filed 2001·Granted Dec 24, 2002·19 cites·4 claims
- 1677US8018120B2Surface acoustic wave device and method of fabricating the sameTAIYO YUDEN KK·Filed 2009·Granted Sep 13, 2011·7 cites·4 claims
- 1775US7816794B2Electronic device and method of fabricating the sameFUJITSU MEDIA DEVICES LTD·Filed 2005·Granted Oct 19, 2010·7 cites·13 claims
- 1875US7071796B2Surface acoustic wave filterFUJITSU MEDIA DEVICES LTD·Filed 2004·Granted Jul 4, 2006·14 cites·8 claims
- 1974US7291904B2Downsized package for electric wave deviceFUJITSU MEDIA DEVICES LTD·Filed 2005·Granted Nov 6, 2007·6 cites·10 claims
- 2073US7190241B2Elastic wave apparatusFUJITSU MEDIA DEVICES LTD·Filed 2005·Granted Mar 13, 2007·7 cites·13 claims
- 2172US7180388B2Surface acoustic wave deviceFUJITSU MEDIA DEVICES LTD·Filed 2005·Granted Feb 20, 2007·7 cites·4 claims
- 2268US7002438B2Surface acoustic wave device with reflection electrodes having pitches that varyFUJITSU MEDIA DEVICES LTD·Filed 2004·Granted Feb 21, 2006·12 cites·24 claims
- 2367US8076827B2Acoustic wave device and method for fabricating the sameSAITOU YASUYUKI·Filed 2009·Granted Dec 13, 2011·7 cites·15 claims
- 2467US5963114ASurface-acoustic-wave device having an improved pass-band characteristic and an improved degree of freedom for setting input and output impedancesFUJITSU LTD·Filed 1996·Granted Oct 5, 1999·16 cites·7 claims
- 2566US7274129B2Surface acoustic wave device and method of fabricating the sameFUJITSU LTD·Filed 2004·Granted Sep 25, 2007·10 cites·18 claims
- 2666US6317015B1Surface acoustic wave device using a leaky surface acoustic wave with an optimized cut angle of a piezoelectric substrateFUJITSU LTD·Filed 1999·Granted Nov 13, 2001·18 cites·2 claims
- 2765US10491191B2Acoustic wave device and method of fabricating the sameTAIYO YUDEN KK·Filed 2017·Granted Nov 26, 2019·1 cites·8 claims
- 2863US7102462B2Surface acoustic wave deviceFUJITSU MEDIA DEVICES LTD·Filed 2004·Granted Sep 5, 2006·8 cites·6 claims
- 2961US10250231B2Acoustic wave deviceTAIYO YUDEN KK·Filed 2017·Granted Apr 2, 2019·1 cites·11 claims
- 3061US7388456B2Surface acoustic wave filterFUJITSU MEDIA DEVICES LTD·Filed 2004·Granted Jun 17, 2008·9 cites·2 claims
- 3161US7304417B2Package for electronic device, base substrate, electronic device and fabrication method thereofFUJITSU MEDIA DEVICES LTD·Filed 2004·Granted Dec 4, 2007·10 cites·13 claims
- 3261US7292122B2Surface acoustic wave filter and wireless device that employs the sameFUJITSU MEDIA DEVICES LTD·Filed 2004·Granted Nov 6, 2007·8 cites·5 claims
- 3360US7795999B2Filter having multiple surface acoustic wave filters connected in parallelFUJITSU MEDIA DEVICES LTD·Filed 2007·Granted Sep 14, 2010·4 cites·6 claims
- 3459US6965282B2Surface acoustic wave device with two split interdigital transducers connected by specified electrode structuresFUJITSU MEDIA DEVICES LTD·Filed 2004·Granted Nov 15, 2005·7 cites·5 claims
- 3557US9294068B2Filter circuit and moduleTAIYO YUDEN KK·Filed 2014·Granted Mar 22, 2016·1 cites·14 claims
- 3653US7233219B2Balanced output filter having specified package input and output ground metal patternsFUJITSU LTD·Filed 2005·Granted Jun 19, 2007·2 cites·13 claims
- 3752US6271739B1Surface-acoustic-wave device having an improved pass-band characteristic and an improved degree of freedom for setting input and output impedancesFUJITSU LTD·Filed 1999·Granted Aug 7, 2001·8 cites·3 claims
- 3850US7236067B2Surface acoustic wave filterFUJITSU MEDIA DEVICES LTD·Filed 2006·Granted Jun 26, 2007·1 cites·12 claims
- 3949US10187035B2Acoustic wave deviceTAIYO YUDEN KK·Filed 2017·Granted Jan 22, 2019·0 cites·13 claims
- 4049US2007107177A1Surface acoustic wave device and method of producing the sameFUJITSU MEDIA DEVICES LTD·Filed 2007·Application pending·0 cites
- 4148US7400220B2Surface acoustic wave deviceFUJITSU MEDIA DEVICES LTD·Filed 2005·Granted Jul 15, 2008·1 cites·7 claims
- 4247US7170371B2Surface acoustic wave device with a thicker partial bus bar area and optimal bus bar to electrode tip gapFUJITSU LTD·Filed 2004·Granted Jan 30, 2007·3 cites·15 claims
- 4346US9633873B2Electronic deviceTAIYO YUDEN KK·Filed 2014·Granted Apr 25, 2017·0 cites·11 claims
- 4445US9667221B2Acoustic wave deviceTAIYO YUDEN KK·Filed 2014·Granted May 30, 2017·0 cites·10 claims
- 4544US6114926ASurface-acoustic-wave device having an improved pass-band characteristic and an improved degree of freedom for setting input and output impedancesFUJITSU LTD·Filed 1999·Granted Sep 5, 2000·5 cites·2 claims
- 4644US2006189292A1Electronic circuit deviceFUJITSU MEDIA DEVICES LTD·Filed 2006·Application pending·0 cites
- 4743US8093101B2Electronic device and method of fabricating the sameSAKINADA KAORU·Filed 2006·Granted Jan 10, 2012·1 cites·12 claims
- 4843US7157991B2Surface acoustic wave device having reflectors with both open and shorted electrodesFUJITSU MEDIA DEVICES LTD·Filed 2003·Granted Jan 2, 2007·2 cites·4 claims
- 4942US10263757B2Filter circuit and moduleTAIYO YUDEN KK·Filed 2014·Granted Apr 16, 2019·0 cites·9 claims
- 5042US9214445B2Electronic component and method of fabricating the sameTAIYO YUDEN KK·Filed 2014·Granted Dec 15, 2015·0 cites·4 claims
Showing the top 50 of 60 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →