Inventor · disambiguated record
Hiromasa Amma
Also filed as: AMMA HIROMASA
60 granted patents·8 pending applications·281 citations·filing 2004–2025
98Inventor score
Top patents by PatentIndex Score
68 records- 0198US7384116B2Liquid container and ink jet printing apparatusCANON KK·Filed 2005·Granted Jun 10, 2008·29 cites·11 claims
- 0297US7926927B2Liquid container and jet printing apparatusCANON KK·Filed 2008·Granted Apr 19, 2011·24 cites·14 claims
- 0397US7350910B2Liquid container and ink jet recording apparatusCANON KK·Filed 2005·Granted Apr 1, 2008·30 cites·15 claims
- 0496US7445322B2Liquid storing container and recording apparatusCANON KK·Filed 2005·Granted Nov 4, 2008·25 cites·3 claims
- 0595US10471719B2Manufacturing method of liquid supply componentCANON KK·Filed 2017·Granted Nov 12, 2019·6 cites·9 claims
- 0694US8998375B2Liquid ejection apparatus and liquid ejection headCANON KK·Filed 2014·Granted Apr 7, 2015·10 cites·11 claims
- 0793US10081185B2Liquid ejection head, liquid ejection apparatus, flow path member, and method for manufacturing liquid ejection headCANON KK·Filed 2017·Granted Sep 25, 2018·4 cites·16 claims
- 0893US9764554B2Method for manufacturing molded member and liquid ejecting head, liquid ejecting head, and moldCANON KK·Filed 2016·Granted Sep 19, 2017·5 cites·10 claims
- 0993US9718274B2Liquid ejection head and liquid ejection apparatusCANON KK·Filed 2016·Granted Aug 1, 2017·5 cites·12 claims
- 1093US8109617B2Liquid container and ink jet printing apparatusKOTAKI YASUO·Filed 2008·Granted Feb 7, 2012·20 cites·17 claims
- 1192US10434694B2Resin molding methodCANON KK·Filed 2017·Granted Oct 8, 2019·4 cites·7 claims
- 1292US10391767B2Liquid ejection headCANON KK·Filed 2018·Granted Aug 27, 2019·4 cites·19 claims
- 1392US9770911B2Liquid ejection head and liquid ejection apparatus with beam-shaped members in flow passageCANON KK·Filed 2016·Granted Sep 26, 2017·5 cites·7 claims
- 1489US10870279B2Method of manufacturing liquid supply unitCANON KK·Filed 2017·Granted Dec 22, 2020·3 cites·5 claims
- 1589US10525711B2Method of manufacturing liquid ejecting headCANON KK·Filed 2017·Granted Jan 7, 2020·3 cites·11 claims
- 1689US10363692B2Method for manufacturing liquid supply memberCANON KK·Filed 2016·Granted Jul 30, 2019·3 cites·10 claims
- 1788US9884485B2Liquid ejecting head and liquid ejecting apparatusCANON KK·Filed 2016·Granted Feb 6, 2018·3 cites·14 claims
- 1887US9751318B2Liquid ejection apparatus and attachment assembly of liquid ejection apparatusCANON KK·Filed 2016·Granted Sep 5, 2017·3 cites·14 claims
- 1986US10532574B2Method of manufacturing liquid ejecting head, and liquid ejecting headCANON KK·Filed 2017·Granted Jan 14, 2020·2 cites·5 claims
- 2085US10384457B2Liquid ejection head unit and liquid ejecting apparatusCANON KK·Filed 2018·Granted Aug 20, 2019·2 cites·9 claims
- 2184US10471727B2Liquid ejecting head and liquid ejecting apparatusCANON KK·Filed 2016·Granted Nov 12, 2019·2 cites·8 claims
- 2284US10307967B2Method for manufacturing liquid-ejecting headCANON KK·Filed 2016·Granted Jun 4, 2019·2 cites·4 claims
- 2384US9902163B2Liquid ejecting head and liquid ejecting apparatusCANON KK·Filed 2016·Granted Feb 27, 2018·2 cites·13 claims
- 2484US7111931B2Ink tankCANON KK·Filed 2004·Granted Sep 26, 2006·24 cites·14 claims
- 2583US10513069B2Method for manufacturing liquid supply memberCANON KK·Filed 2016·Granted Dec 24, 2019·2 cites·7 claims
- 2683US10300643B2Manufacture method of liquid supply member and manufacture apparatusCANON KK·Filed 2016·Granted May 28, 2019·2 cites·9 claims
- 2782US10071512B2Method for manufacturing liquid-ejecting headCANON KK·Filed 2016·Granted Sep 11, 2018·2 cites·11 claims
- 2879US10926441B2Liquid supply member and manufacturing method of liquid supply memberCANON KK·Filed 2017·Granted Feb 23, 2021·1 cites·10 claims
- 2979US10906221B2Manufacturing method of liquid supply memberCANON KK·Filed 2017·Granted Feb 2, 2021·1 cites·5 claims
- 3078US8777377B2Liquid discharge headNAGATA RUMI·Filed 2012·Granted Jul 15, 2014·5 cites·11 claims
- 3178US7559636B2Ink tank with valve in ink supply portCANON KK·Filed 2006·Granted Jul 14, 2009·5 cites·9 claims
- 3277US10828812B2Molded part, manufacturing method of molded part and moldCANON KK·Filed 2016·Granted Nov 10, 2020·1 cites·5 claims
- 3377US10618327B2Liquid ejection head unit and liquid ejection apparatusCANON KK·Filed 2018·Granted Apr 14, 2020·1 cites·20 claims
- 3476US9931850B2Manufacture method of liquid supply member, manufacture apparatus, and liquid supply memberCANON KK·Filed 2016·Granted Apr 3, 2018·1 cites·10 claims
- 3575US9975346B2Liquid ejection head, liquid ejection apparatus and manufacturing method for liquid ejection headCANON KK·Filed 2016·Granted May 22, 2018·1 cites·7 claims
- 3675US9832864B2Circuit board and liquid ejection headCANON KK·Filed 2016·Granted Nov 28, 2017·2 cites·11 claims
- 3775US8162460B2Inkjet printing head and inkjet printing cartridgeAMMA HIROMASA·Filed 2008·Granted Apr 24, 2012·4 cites·11 claims
- 3873US12275246B2Liquid ejection head and liquid ejection apparatusCANON KK·Filed 2023·Granted Apr 15, 2025·0 cites·9 claims
- 3972US2025236112A1Liquid discharge head and recording apparatusCANON KK·Filed 2025·Application pending·0 cites
- 4069US8147048B2Ink jet recording cartridgeAMMA HIROMASA·Filed 2011·Granted Apr 3, 2012·1 cites·4 claims
- 4169US7234803B2Ink jet recording cartridge having a lid for pressing an absorber and commonly usable in other ink jet recording cartridge configurationsCANON KK·Filed 2004·Granted Jun 26, 2007·10 cites·6 claims
- 4268US9193154B2Liquid ejection head and liquid ejection apparatusCANON KK·Filed 2014·Granted Nov 24, 2015·1 cites·7 claims
- 4368US7108361B2Ink tankCANON KK·Filed 2004·Granted Sep 19, 2006·11 cites·1 claims
- 4466US12090758B2Liquid ejection head and liquid ejection apparatusCANON KK·Filed 2022·Granted Sep 17, 2024·0 cites·17 claims
- 4563US10994542B2Inkjet printing apparatusCANON KK·Filed 2019·Granted May 4, 2021·0 cites·20 claims
- 4660US8070276B2Ink jet recording cartridgeAMMA HIROMASA·Filed 2008·Granted Dec 6, 2011·1 cites·3 claims
- 4760US2025115047A1Liquid ejection head, liquid ejection apparatus, and manufacturing method of liquid ejection headCANON KK·Filed 2024·Application pending·0 cites
- 4858US7055942B2Liquid discharge head cartridgeCANON KK·Filed 2004·Granted Jun 6, 2006·6 cites·10 claims
- 4956US2024217237A1Liquid ejection head and manufacturing method of liquid ejection headCANON KK·Filed 2023·Application pending·0 cites
- 5056US2024181777A1Liquid ejection headCANON KK·Filed 2023·Application pending·0 cites
Showing the top 50 of 68 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →