Inventor · disambiguated record
Koji Furutani
Also filed as: FURUTANI KOJI
51 granted patents·7 pending applications·1,054 citations·filing 1994–2025
98Inventor score
Top patents by PatentIndex Score
58 records- 0196US5903421AHigh-frequency composite partMURATA MANUFACTURING CO·Filed 1997·Granted May 11, 1999·171 cites·11 claims
- 0296US5668511ALow-pass filterMURATA MANUFACTURING CO·Filed 1996·Granted Sep 16, 1997·127 cites·10 claims
- 0395US6633748B1Composite high frequency component and mobile communication device including the sameMURATA MANUFACTURING CO·Filed 1999·Granted Oct 14, 2003·79 cites·12 claims
- 0494US7200365B2Composite high frequency component and mobile communication device including the sameMURATA MANUFACTURING CO·Filed 2003·Granted Apr 3, 2007·67 cites·10 claims
- 0593US6445262B1Composite high frequency component and mobile communication apparatus incorporating the sameMURATA MANUFACTURING CO·Filed 2000·Granted Sep 3, 2002·60 cites·7 claims
- 0691US6788958B2High-frequency module and mobile communication apparatus using the sameMURATA MANUFACTURING CO·Filed 2001·Granted Sep 7, 2004·32 cites·19 claims
- 0790US6928298B2Mobile communication device and high-frequency composite unit used in the sameMURATA MANUFACTURING CO·Filed 2001·Granted Aug 9, 2005·53 cites·14 claims
- 0889US8891596B2High frequency front end moduleMURATA MANUFACTURING CO·Filed 2014·Granted Nov 18, 2014·12 cites·20 claims
- 0989US6563396B2Composite high frequency component and mobile communication apparatus incorporating the sameMURATA MANUFACTURING CO·Filed 2002·Granted May 13, 2003·32 cites·20 claims
- 1088US6731184B1High frequency switching componentMURATA MANUFACTURING CO·Filed 2000·Granted May 4, 2004·34 cites·19 claims
- 1187US5783976AComposite high frequency apparatus and method of forming sameMURATA MANUFACTURING CO·Filed 1995·Granted Jul 21, 1998·47 cites·9 claims
- 1286US6768898B2Composite high frequency component and mobile communication apparatus including the sameMURATA MANUFACTURING CO·Filed 2002·Granted Jul 27, 2004·18 cites·18 claims
- 1385US8422972B2Antenna combining moduleFURUTANI KOJI·Filed 2011·Granted Apr 16, 2013·8 cites·7 claims
- 1484US8005037B2Communication control method, radio base station, and radio control stationNTT DOCOMO INC·Filed 2007·Granted Aug 23, 2011·11 cites·13 claims
- 1581US8390396B2Duplexer moduleFURUTANI KOJI·Filed 2011·Granted Mar 5, 2013·6 cites·6 claims
- 1681US5519364AHigh-frequency switchMURATA MANUFACTURING CO·Filed 1995·Granted May 21, 1996·40 cites·12 claims
- 1780US5748054AHigh frequency hybrid switch operable in antenna diversity type portable telephoneMURATA MANUFACTURING CO·Filed 1996·Granted May 5, 1998·40 cites·23 claims
- 1878US7756488B2High-frequency switch moduleMURATA MANUFACTURING CO·Filed 2007·Granted Jul 13, 2010·7 cites·6 claims
- 1977US5999065AComposite high-frequency componentMURATA MANUFACTURING CO·Filed 1997·Granted Dec 7, 1999·26 cites·11 claims
- 2076US7356349B2High-frequency module and communication apparatusMURATA MANUFACTURING CO·Filed 2004·Granted Apr 8, 2008·17 cites·18 claims
- 2173US12244050B2Directional coupler, high-frequency module, and communication apparatusMURATA MANUFACTURING CO·Filed 2022·Granted Mar 4, 2025·0 cites·13 claims
- 2272US7711389B2High frequency moduleMURATA MANUFACTURING CO·Filed 2004·Granted May 4, 2010·13 cites·6 claims
- 2371US8600397B2Mobile communication system and communication controlling methodISHII HIROYUKI·Filed 2007·Granted Dec 3, 2013·4 cites·11 claims
- 2469US6177850B1Two frequency filter comprising an inductance device, a resonator, and a switching deviceMURATA MANUFACTURING CO·Filed 1999·Granted Jan 23, 2001·21 cites·4 claims
- 2564US7183875B2High frequency switching component with electrostatic surge eliminationMURATA MANUFACTURING CO·Filed 2003·Granted Feb 27, 2007·6 cites·16 claims
- 2663US12341548B2Radio-frequency module and communication apparatusMURATA MANUFACTURING CO·Filed 2023·Granted Jun 24, 2025·0 cites·20 claims
- 2763US12015212B2Radio-frequency module and communication apparatusMURATA MANUFACTURING CO·Filed 2023·Granted Jun 18, 2024·0 cites·20 claims
- 2863US6111478AFilter with a switch having capacitanceMURATA MANUFACTURING CO·Filed 1998·Granted Aug 29, 2000·17 cites·11 claims
- 2963US6100776AHigh-frequency composite transmission section with switch, LC filter, and notch filterMURATA MANUFACTURING CO·Filed 1999·Granted Aug 8, 2000·15 cites·1 claims
- 3062US12283760B2Radio-frequency module and communication apparatusMURATA MANUFACTURING CO·Filed 2023·Granted Apr 22, 2025·0 cites·20 claims
- 3161US12057632B2Radio-frequency module and communication apparatusMURATA MANUFACTURING CO·Filed 2023·Granted Aug 6, 2024·0 cites·20 claims
- 3261US6504452B2Low-pass filter and mobile communication device using the sameMURATA MANUFACTURING CO·Filed 2001·Granted Jan 7, 2003·9 cites·17 claims
- 3361US6442376B1Composite high frequency component and mobile communication apparatus including the sameMURATA MANUFACTURING CO·Filed 1999·Granted Aug 27, 2002·25 cites·20 claims
- 3460US8659861B2Electronic component device and package substrateFURUTANI KOJI·Filed 2012·Granted Feb 25, 2014·1 cites·6 claims
- 3559US8406199B2Data flow amount control device and data flow amount control methodISHII HIROYUKI·Filed 2007·Granted Mar 26, 2013·1 cites·14 claims
- 3658US12315982B2Directional coupler, high-frequency module, and communication deviceMURATA MANUFACTURING CO·Filed 2022·Granted May 27, 2025·0 cites·13 claims
- 3758US7398103B2High-frequency module and mobile communication apparatus using the sameMURATA MANUFACTURING CO·Filed 2004·Granted Jul 8, 2008·4 cites·20 claims
- 3857US12148976B2Directional couplerMURATA MANUFACTURING CO·Filed 2022·Granted Nov 19, 2024·0 cites·10 claims
- 3956US7904031B2High-frequency module for transmitting and receiving transmission-reception signals of at least three communication systems using a single antennaMURATA MANUFACTURING CO·Filed 2004·Granted Mar 8, 2011·4 cites·20 claims
- 4056US5990732AComposite high frequency apparatus and method of forming sameMURATA MANUFACTURING CO·Filed 1998·Granted Nov 23, 1999·15 cites·19 claims
- 4156US2023170315A1Radio-frequency module and communication apparatusMURATA MANUFACTURING CO·Filed 2023·Application pending·0 cites
- 4255US5532658AMounting structure for electronic componentMURATA MANUFACTURING CO·Filed 1994·Granted Jul 2, 1996·19 cites·28 claims
- 4354US7812687B2High-frequency switching circuit moduleMURATA MANUFACTURING CO·Filed 2009·Granted Oct 12, 2010·2 cites·7 claims
- 4453US7155197B2High-frequency module and communication apparatusMURATA MANUFACTURING CO·Filed 2003·Granted Dec 26, 2006·5 cites·16 claims
- 4551US11706905B2ModuleMURATA MANUFACTURING CO·Filed 2021·Granted Jul 18, 2023·0 cites·19 claims
- 4650US2025175161A1Resin-sealed component and high frequency moduleMURATA MANUFACTURING CO·Filed 2025·Application pending·0 cites
- 4746US2024128629A1Directional coupler, high frequency module, and communication apparatusMURATA MANUFACTURING CO·Filed 2023·Application pending·0 cites
- 4845US8185126B2Communication control method, radio base station, and radio control stationGOTO YOSHIKAZU·Filed 2007·Granted May 22, 2012·0 cites·13 claims
- 4945US8023933B2Radio control method and radio control apparatusNTT DOCOMO INC·Filed 2007·Granted Sep 20, 2011·0 cites·5 claims
- 5044US8248184B2Duplexer moduleFURUTANI KOJI·Filed 2011·Granted Aug 21, 2012·0 cites·9 claims
Showing the top 50 of 58 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Koji Furutani files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →