Inventor · disambiguated record
Yoichi Naganuma
Also filed as: NAGANUMA YOICHI
51 granted patents·3 pending applications·45 citations·filing 1990–2024
96Inventor score
Top patents by PatentIndex Score
54 records- 0196US11225072B2Liquid ejecting head and liquid ejecting systemSEIKO EPSON CORP·Filed 2020·Granted Jan 18, 2022·3 cites·15 claims
- 0294US11331917B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2021·Granted May 17, 2022·2 cites·17 claims
- 0393US9573371B2Head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2016·Granted Feb 21, 2017·5 cites·10 claims
- 0487US9705066B2Head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2016·Granted Jul 11, 2017·6 cites·8 claims
- 0583US9914300B2Head and liquid ejecting apparatus with electrically connecting bumpsSEIKO EPSON CORP·Filed 2016·Granted Mar 13, 2018·2 cites·10 claims
- 0678US11738557B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2022·Granted Aug 29, 2023·0 cites·15 claims
- 0778US10500853B2Piezoelectric device, liquid ejecting head, and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2018·Granted Dec 10, 2019·1 cites·20 claims
- 0876US9914301B2Piezoelectric device, liquid ejecting head, and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2017·Granted Mar 13, 2018·1 cites·20 claims
- 0975US10000060B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2017·Granted Jun 19, 2018·1 cites·10 claims
- 1075US10000061B2Piezoelectric device, liquid ejecting head, and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2016·Granted Jun 19, 2018·2 cites·21 claims
- 1173US10150294B2Inkjet head and inkjet printerSEIKO EPSON CORP·Filed 2016·Granted Dec 11, 2018·1 cites·6 claims
- 1272US9434162B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2014·Granted Sep 6, 2016·1 cites·16 claims
- 1372US9375921B2Piezoelectric element, liquid ejecting head, and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2015·Granted Jun 28, 2016·1 cites·3 claims
- 1468US12076991B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2022·Granted Sep 3, 2024·0 cites·20 claims
- 1565US10449764B2MEMS device, liquid ejecting head, liquid ejecting apparatus, manufacturing method of MEMS device, and manufacturing method of liquid ejecting headSEIKO EPSON CORP·Filed 2018·Granted Oct 22, 2019·0 cites·4 claims
- 1664US10029459B2Piezoelectric device, liquid ejecting head, and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2017·Granted Jul 24, 2018·0 cites·6 claims
- 1763US11491785B2Liquid ejecting head and liquid ejecting systemSEIKO EPSON CORP·Filed 2020·Granted Nov 8, 2022·0 cites·17 claims
- 1861US11390079B2MEMS device, liquid ejecting head, liquid ejecting apparatus, manufacturing method of MEMS device, manufacturing method of liquid ejecting head, and manufacturing method of liquid ejecting apparatusSEIKO EPSON CORP·Filed 2017·Granted Jul 19, 2022·0 cites·8 claims
- 1961US9844939B2Piezoelectric device, liquid ejecting head, and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2017·Granted Dec 19, 2017·0 cites·12 claims
- 2059US11230100B2Liquid discharging head and liquid discharging apparatusSEIKO EPSON CORP·Filed 2020·Granted Jan 25, 2022·0 cites·17 claims
- 2159US9944077B2MEMS device, liquid ejecting head, liquid ejecting apparatus, manufacturing method of MEMS device, and manufacturing method of liquid ejecting headSEIKO EPSON CORP·Filed 2016·Granted Apr 17, 2018·0 cites·3 claims
- 2258US11167552B2Liquid discharging head and liquid discharging apparatusSEIKO EPSON CORP·Filed 2020·Granted Nov 9, 2021·0 cites·14 claims
- 2358US2025206023A1Method Of Manufacturing Nozzle Plate, Liquid Ejecting Head, And Liquid Ejecting ApparatusSEIKO EPSON CORP·Filed 2024·Application pending·0 cites
- 2457US12370796B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2023·Granted Jul 29, 2025·0 cites·15 claims
- 2557US10272686B2MEMS device, liquid ejecting head, manufacturing method of MEMS device, and manufacturing method of liquid ejecting headSEIKO EPSON CORP·Filed 2017·Granted Apr 30, 2019·0 cites·6 claims
- 2656US11833818B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2021·Granted Dec 5, 2023·0 cites·17 claims
- 2756US11072171B2Liquid discharging head and liquid discharging apparatusSEIKO EPSON CORP·Filed 2020·Granted Jul 27, 2021·0 cites·12 claims
- 2855US12491714B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2023·Granted Dec 9, 2025·0 cites·15 claims
- 2954US9908331B2MEMS device and liquid ejecting headSEIKO EPSON CORP·Filed 2017·Granted Mar 6, 2018·0 cites·10 claims
- 3053US5103893AMethod and apparatus for detecting level of molten metalNIPPON STEEL CORP·Filed 1990·Granted Apr 14, 1992·19 cites·12 claims
- 3151US9919522B2MEMS device, liquid ejecting head, liquid ejecting apparatus, manufacturing method of MEMS device, and manufacturing method of liquid ejecting headSEIKO EPSON CORP·Filed 2016·Granted Mar 20, 2018·0 cites·5 claims
- 3250US12138925B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2021·Granted Nov 12, 2024·0 cites·11 claims
- 3350US10807363B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2019·Granted Oct 20, 2020·0 cites·10 claims
- 3449US11548280B2Liquid ejecting head and liquid ejecting systemSEIKO EPSON CORP·Filed 2020·Granted Jan 10, 2023·0 cites·14 claims
- 3549US11225073B2Liquid ejecting head and liquid ejecting systemSEIKO EPSON CORP·Filed 2020·Granted Jan 18, 2022·0 cites·20 claims
- 3649US10639889B2MEMS device, liquid ejecting head, liquid ejecting apparatus, and manufacturing method of MEMS deviceSEIKO EPSON CORP·Filed 2018·Granted May 5, 2020·0 cites·7 claims
- 3748US11654681B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2021·Granted May 23, 2023·0 cites·13 claims
- 3848US9421767B2Liquid ejecting head and manufacturing method of liquid ejecting headSEIKO EPSON CORP·Filed 2015·Granted Aug 23, 2016·0 cites·5 claims
- 3948US9346270B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2015·Granted May 24, 2016·0 cites·12 claims
- 4047US10882316B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2019·Granted Jan 5, 2021·0 cites·17 claims
- 4147US9950514B2Piezoelectric element, liquid ejecting head, and piezoelectric element deviceSEIKO EPSON CORP·Filed 2017·Granted Apr 24, 2018·0 cites·12 claims
- 4247US9919523B2Piezoelectric device, liquid ejecting head, and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2017·Granted Mar 20, 2018·0 cites·18 claims
- 4347US9022529B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2014·Granted May 5, 2015·0 cites·8 claims
- 4446US11554584B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2021·Granted Jan 17, 2023·0 cites·17 claims
- 4546US11292247B2Liquid discharging head and liquid discharging apparatusSEIKO EPSON CORP·Filed 2020·Granted Apr 5, 2022·0 cites·10 claims
- 4644US9393784B2Piezoelectric element, liquid ejecting head, and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2015·Granted Jul 19, 2016·0 cites·3 claims
- 4743US9969159B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2017·Granted May 15, 2018·0 cites·15 claims
- 4842US10059102B2Inkjet head and inkjet printerSEIKO EPSON CORP·Filed 2016·Granted Aug 28, 2018·0 cites·6 claims
- 4942US2020307212A1Liquid discharging head and liquid discharging apparatusSEIKO EPSON CORP·Filed 2020·Application pending·0 cites
- 5040US10081181B2Liquid ejecting head and liquid ejecting apparatusSEIKO EPSON CORP·Filed 2017·Granted Sep 25, 2018·0 cites·10 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →