Inventor · disambiguated record
Koji Nageno
Also filed as: NAGENO KOJI
58 granted patents·3 pending applications·2,402 citations·filing 1981–2023
99Inventor score
Top patents by PatentIndex Score
61 records- 0197US6738487B1EarphoneSONY CORP·Filed 2000·Granted May 18, 2004·166 cites·6 claims
- 0297US6560346B2Pipe microphone deviceSONY CORP·Filed 2001·Granted May 6, 2003·164 cites·1 claims
- 0397US5949896AEarphoneSONY CORP·Filed 1997·Granted Sep 7, 1999·352 cites·5 claims
- 0497US5018599AHeadphone deviceSONY CORP·Filed 1989·Granted May 28, 1991·275 cites·14 claims
- 0596US10812926B2Sound output device, sound generation method, and programSONY CORP·Filed 2016·Granted Oct 20, 2020·22 cites·20 claims
- 0696US8009853B2Headphone deviceSONY CORP·Filed 2006·Granted Aug 30, 2011·63 cites·20 claims
- 0796US6728388B1HeadphoneSONY CORP·Filed 2000·Granted Apr 27, 2004·125 cites·2 claims
- 0896US6625293B1MicrophoneSONY CORP·Filed 2000·Granted Sep 23, 2003·116 cites·4 claims
- 0996US5406037AHeadphone including means for mounting belt-like suspenderSONY CORP·Filed 1994·Granted Apr 11, 1995·251 cites·5 claims
- 1095US11037544B2Sound output device, sound output method, and sound output systemSONY CORP·Filed 2020·Granted Jun 15, 2021·4 cites·15 claims
- 1195US8611581B2Earphone deviceMATSUO TOMOHIRO·Filed 2007·Granted Dec 17, 2013·31 cites·5 claims
- 1294US10685641B2Sound output device, sound output method, and sound output system for sound reverberationSONY CORP·Filed 2017·Granted Jun 16, 2020·11 cites·1 claims
- 1393US9020181B2Earphone deviceSONY CORP·Filed 2013·Granted Apr 28, 2015·10 cites·12 claims
- 1493US4874316AConnector apparatusSONY CORP·Filed 1988·Granted Oct 17, 1989·123 cites·5 claims
- 1593US4736435AEar piece transducerSONY CORP·Filed 1981·Granted Apr 5, 1988·106 cites·5 claims
- 1691US10182281B2Sound output device and sound guiding deviceSONY CORP·Filed 2015·Granted Jan 15, 2019·7 cites·20 claims
- 1791US7245736B2Headphone deviceSONY CORP·Filed 2006·Granted Jul 17, 2007·20 cites·2 claims
- 1890US8948435B2Driver unit and earphone deviceOOSATO YUUSUKE·Filed 2012·Granted Feb 3, 2015·17 cites·11 claims
- 1990US5420935AAuricle insertion headphone with improved grillSONY CORP·Filed 1994·Granted May 30, 1995·130 cites·8 claims
- 2089US6970572B2Headphone deviceSONY CORP·Filed 2001·Granted Nov 29, 2005·50 cites·6 claims
- 2187US9491533B2Earphone deviceSONY CORP·Filed 2015·Granted Nov 8, 2016·3 cites·19 claims
- 2287US7120268B2HeadphoneSONY CORP·Filed 2002·Granted Oct 10, 2006·41 cites·10 claims
- 2386US10237641B2Sound output device and sound guiding deviceSONY CORP·Filed 2018·Granted Mar 19, 2019·3 cites·12 claims
- 2486US8208676B2Earpiece and earphoneMUROZAKI KATSUNORI·Filed 2009·Granted Jun 26, 2012·19 cites·11 claims
- 2585US8208672B2HeadphoneNAGENO KOJI·Filed 2008·Granted Jun 26, 2012·17 cites·11 claims
- 2684US8913773B2Earphone deviceMATSUO TOMOHIRO·Filed 2012·Granted Dec 16, 2014·4 cites·20 claims
- 2784US8526659B2Earphone and acoustic transducerNAGENO KOJI·Filed 2011·Granted Sep 3, 2013·9 cites·7 claims
- 2882US6385325B1Headphone deviceSONY CORP·Filed 1999·Granted May 7, 2002·75 cites·4 claims
- 2980US11146877B2Sound output device and sound guiding deviceSONY CORP·Filed 2020·Granted Oct 12, 2021·1 cites·11 claims
- 3080US5497427AHeadphoneSONY CORP·Filed 1994·Granted Mar 5, 1996·57 cites·1 claims
- 3179US12501208B2Earhole-wearable sound collection device, signal processing device, and sound collection methodSONY GROUP CORP·Filed 2023·Granted Dec 16, 2025·0 cites·6 claims
- 3279US9918162B2Processing device and method for improving S/N ratioSONY CORP·Filed 2016·Granted Mar 13, 2018·2 cites·7 claims
- 3378US8532324B2HeadphoneOOSATO YUUSUKE·Filed 2008·Granted Sep 10, 2013·10 cites·9 claims
- 3478US5844998AHeadphone apparatusSONY CORP·Filed 1997·Granted Dec 1, 1998·60 cites·4 claims
- 3577US10524036B2Wearable deviceSONY CORP·Filed 2016·Granted Dec 31, 2019·2 cites·18 claims
- 3676US10659863B2Sound output device and sound guiding deviceSONY CORP·Filed 2019·Granted May 19, 2020·1 cites·15 claims
- 3776US9237392B2Earhole-wearable sound collection device, signal processing device, and sound collection methodSONY CORP·Filed 2012·Granted Jan 12, 2016·3 cites·11 claims
- 3873US9014410B2Earphone deviceSONY CORP·Filed 2013·Granted Apr 21, 2015·1 cites·20 claims
- 3973USRE37398EHeadphoneSONY CORP·Filed 1998·Granted Oct 2, 2001·42 cites·5 claims
- 4072US9232294B2Earphone deviceSONY CORP·Filed 2013·Granted Jan 5, 2016·1 cites·13 claims
- 4172US9179212B2Earphone deviceSONY CORP·Filed 2013·Granted Nov 3, 2015·1 cites·15 claims
- 4272US9008345B2Earphone deviceSONY CORP·Filed 2013·Granted Apr 14, 2015·1 cites·14 claims
- 4371US8634587B2Acoustic conversion deviceNAGUMO TSUTOMU·Filed 2011·Granted Jan 21, 2014·4 cites·7 claims
- 4470US11765497B2Earhole-wearable sound collection device, signal processing device, and sound collection methodSONY GROUP CORP·Filed 2021·Granted Sep 19, 2023·0 cites·5 claims
- 4565US11375307B2Earphone deviceSONY GROUP CORP·Filed 2017·Granted Jun 28, 2022·0 cites·17 claims
- 4662US9961428B2Earphone deviceSONY CORP·Filed 2016·Granted May 1, 2018·0 cites·14 claims
- 4761US10735844B2Wearable deviceSONY CORP·Filed 2019·Granted Aug 4, 2020·0 cites·15 claims
- 4861US9949007B2Earphone deviceSONY CORP·Filed 2015·Granted Apr 17, 2018·0 cites·15 claims
- 4961US9930437B2Earphone deviceSONY CORP·Filed 2015·Granted Mar 27, 2018·0 cites·11 claims
- 5061US9826300B2Earphone deviceSONY CORP·Filed 2015·Granted Nov 21, 2017·0 cites·15 claims
Showing the top 50 of 61 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →