Inventor · disambiguated record
Ryo Kasai
Also filed as: KASAI RYO
84 granted patents·6 pending applications·187 citations·filing 2004–2025
98Inventor score
Top patents by PatentIndex Score
90 records- 0195US10035346B2Element substrate and liquid ejection headCANON KK·Filed 2016·Granted Jul 31, 2018·6 cites·34 claims
- 0295US7802858B2Element board for printhead, printhead and printhead control methodCANON KK·Filed 2008·Granted Sep 28, 2010·18 cites·10 claims
- 0393US9597893B2Element substrate and liquid discharge headCANON KK·Filed 2015·Granted Mar 21, 2017·5 cites·11 claims
- 0492US11065878B2Liquid ejection head and liquid ejection apparatusCANON KK·Filed 2019·Granted Jul 20, 2021·2 cites·20 claims
- 0592US7559626B2Inkjet recording head substrate and drive control method, inkjet recording head, inkjet recording head cartridge and inkjet recording apparatusCANON KK·Filed 2005·Granted Jul 14, 2009·13 cites·13 claims
- 0691US10974504B2Liquid ejection head and control method of liquid ejection headCANON KK·Filed 2019·Granted Apr 13, 2021·3 cites·18 claims
- 0791US10717273B2Liquid ejection head and method for circulating liquidCANON KK·Filed 2018·Granted Jul 21, 2020·3 cites·15 claims
- 0891US9085144B2Liquid ejection head and inkjet printing apparatusCANON KK·Filed 2014·Granted Jul 21, 2015·6 cites·13 claims
- 0990US10350885B2Liquid discharge device and liquid discharge headCANON KK·Filed 2017·Granted Jul 16, 2019·3 cites·29 claims
- 1090US8508565B2Device and apparatus for controlling sameCANON KK·Filed 2013·Granted Aug 13, 2013·4 cites·10 claims
- 1190US8400484B2Device and apparatus for controlling sameFURUKAWA TATSUO·Filed 2010·Granted Mar 19, 2013·6 cites·6 claims
- 1289US12343999B2Liquid ejection head and liquid ejection apparatusCANON KK·Filed 2023·Granted Jul 1, 2025·0 cites·6 claims
- 1389US7819493B2Element board for printhead, and printhead having the sameCANON KK·Filed 2007·Granted Oct 26, 2010·8 cites·15 claims
- 1488US8147039B2Head substrate, printhead, head cartridge, and printing apparatusKUROKAWA TOMOKO·Filed 2008·Granted Apr 3, 2012·12 cites·8 claims
- 1588US7815272B2Element body for recording head and recording head having element bodyCANON KK·Filed 2006·Granted Oct 19, 2010·9 cites·18 claims
- 1688US7806495B2Head substrate, printhead, head cartridge, and printing apparatusCANON KK·Filed 2007·Granted Oct 5, 2010·9 cites·10 claims
- 1788US2025296344A1Liquid ejection head and liquid ejection apparatusCANON KK·Filed 2025·Application pending·0 cites
- 1887US8944550B2Element substrate, printhead, and printing apparatusCANON KK·Filed 2014·Granted Feb 3, 2015·4 cites·13 claims
- 1986US12064969B2Liquid ejection head and liquid ejection apparatusCANON KK·Filed 2023·Granted Aug 20, 2024·0 cites·8 claims
- 2084US7896474B2Liquid ejection head and recording apparatusCANON KK·Filed 2008·Granted Mar 1, 2011·7 cites·7 claims
- 2183US9039126B2Liquid ejection head substrate and liquid ejection headCANON KK·Filed 2014·Granted May 26, 2015·3 cites·17 claims
- 2282US9575420B2Lithography apparatus and article manufacturing methodCANON KK·Filed 2014·Granted Feb 21, 2017·3 cites·18 claims
- 2382US9096058B2Device and apparatus for controlling sameCANON KK·Filed 2013·Granted Aug 4, 2015·2 cites·11 claims
- 2482US8342620B2Driving device, recording head, and apparatus using the sameCANON KK·Filed 2010·Granted Jan 1, 2013·3 cites·6 claims
- 2582US7354125B2Element board for printhead, and printhead having the sameCANON KK·Filed 2004·Granted Apr 8, 2008·17 cites·18 claims
- 2680US10639888B2Liquid ejection headCANON KK·Filed 2018·Granted May 5, 2020·1 cites·20 claims
- 2780US10427400B2Printhead and printing apparatusCANON KK·Filed 2017·Granted Oct 1, 2019·1 cites·14 claims
- 2879US11673396B2Liquid ejection head and liquid ejection apparatusCANON KK·Filed 2021·Granted Jun 13, 2023·0 cites·20 claims
- 2979US10406808B2Printing apparatus and printhead substrateCANON KK·Filed 2018·Granted Sep 10, 2019·1 cites·18 claims
- 3079US8864276B2Printhead and printing apparatus utilizing data signal transfer error detectionYAMATO HIDENORI·Filed 2010·Granted Oct 21, 2014·4 cites·18 claims
- 3179US8632150B2Printhead substrate, printhead and printing apparatusKASAI RYO·Filed 2010·Granted Jan 21, 2014·3 cites·8 claims
- 3278US12496820B2Element substrate, liquid discharge head, and printing apparatusCANON KK·Filed 2023·Granted Dec 16, 2025·0 cites·10 claims
- 3377US7866798B2Head cartridge, printhead, and substrate having downsized level conversion elements that suppress power consumptionCANON KK·Filed 2008·Granted Jan 11, 2011·4 cites·11 claims
- 3474US9724919B2Printing element substrate, printhead, and printhead manufacturing methodHIRAYAMA NOBUYUKI·Filed 2011·Granted Aug 8, 2017·2 cites·3 claims
- 3573US8506030B2Element substrate, printhead, and head cartridgeKUROKAWA TOMOKO·Filed 2011·Granted Aug 13, 2013·2 cites·6 claims
- 3670US8876242B2Liquid ejection headTAMARU YUUJI·Filed 2010·Granted Nov 4, 2014·2 cites·13 claims
- 3770US8226190B2Recording element substrate and recording head having the sameHIRAYAMA NOBUYUKI·Filed 2009·Granted Jul 24, 2012·3 cites·7 claims
- 3869US10850505B2Printhead and printing apparatusCANON KK·Filed 2019·Granted Dec 1, 2020·0 cites·17 claims
- 3968US11584122B2Element substrate, liquid discharge head, and printing apparatusCANON KK·Filed 2020·Granted Feb 21, 2023·0 cites·13 claims
- 4068US8740350B2Inkjet recording head substrate and drive control method, inkjet recording head, inkjet recording head cartridge and inkjet recording apparatusSAKURAI MASATAKA·Filed 2009·Granted Jun 3, 2014·2 cites·18 claims
- 4167US7988260B2Recording element substrate and recording head including recording element substrateCANON KK·Filed 2009·Granted Aug 2, 2011·2 cites·6 claims
- 4267US7588304B2Liquid discharge head substrate, liquid discharge head, and liquid discharge apparatusCANON KK·Filed 2007·Granted Sep 15, 2009·2 cites·8 claims
- 4366US11602934B2Liquid ejection head, liquid ejection apparatus, and liquid ejection methodCANON KK·Filed 2019·Granted Mar 14, 2023·0 cites·12 claims
- 4466US8371668B2Recoding element substrate, recording head equipped with the same, recording head cartridge, and recording apparatusCANON KK·Filed 2009·Granted Feb 12, 2013·2 cites·9 claims
- 4566US8075103B2Ink jet print head substrate and ink jet print headFURUKAWA TATSUO·Filed 2011·Granted Dec 13, 2011·1 cites·14 claims
- 4665US11607881B2Element substrate, liquid discharge head, and printing apparatusCANON KK·Filed 2020·Granted Mar 21, 2023·0 cites·16 claims
- 4765US7581797B2Element board for printhead, printhead, printhead cartridge, and printing apparatusCANON KK·Filed 2004·Granted Sep 1, 2009·8 cites·2 claims
- 4864US10668719B2Recording element substrate, liquid ejection head, and liquid ejection apparatusCANON KK·Filed 2018·Granted Jun 2, 2020·0 cites·13 claims
- 4963US10814623B2Element substrate and liquid ejection headCANON KK·Filed 2018·Granted Oct 27, 2020·0 cites·19 claims
- 5063US10315415B2Printhead and printing apparatusCANON KK·Filed 2017·Granted Jun 11, 2019·0 cites·18 claims
Showing the top 50 of 90 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →