Inventor · disambiguated record
Akihiko Matsuyama
Also filed as: MATSUYAMA AKIHIKO
61 granted patents·7 pending applications·522 citations·filing 2001–2019
98Inventor score
Top patents by PatentIndex Score
68 records- 0199US7919544B2Ink-media set, ink composition, ink cartridge, inkjet recording method, inkjet recording apparatus, and ink recorded matterRICOH CO LTD·Filed 2007·Granted Apr 5, 2011·80 cites·9 claims
- 0298US9234110B2Ink for inkjet recording, and ink cartridge, inkjet recording method, inkjet recorder, ink-recorded matter and method of producing the ink-recorded matter using the inkKATOH KEITA·Filed 2015·Granted Jan 12, 2016·14 cites·14 claims
- 0398US8242201B2Pigment dispersion, recording ink, ink cartridge, ink-jet recording method and ink-jet recording apparatusGOTO HIROSHI·Filed 2006·Granted Aug 14, 2012·47 cites·19 claims
- 0498US7977408B2Recording ink, ink set, ink cartridge, ink record, inkjet recording apparatus and inkjet recording methodRICOH CO LTD·Filed 2006·Granted Jul 12, 2011·42 cites·18 claims
- 0597US6641964B2Electrophotographic photoreceptor, method for manufacturing the photoreceptor, and image forming method and apparatus using the photoreceptorRICOH KK·Filed 2001·Granted Nov 4, 2003·80 cites·24 claims
- 0696US6790572B2Electrophotographic photoreceptor, and image forming method and apparatus using the photoreceptorRICOH KK·Filed 2001·Granted Sep 14, 2004·52 cites·37 claims
- 0795US9850391B2Ink, ink stored container, inkjet printing method, and inkjet printing deviceFUKUOKA MASAYUKI·Filed 2016·Granted Dec 26, 2017·8 cites·15 claims
- 0895US8746869B2Ink for inkjet recording, inkjet recording method using the same, ink cartridge housing the same, and recorded matterMATSUYAMA AKIHIKO·Filed 2010·Granted Jun 10, 2014·11 cites·21 claims
- 0995US8109622B2Recording ink, ink cartridge, inkjet recording method, and inkjet recording apparatusGOTO HIROSHI·Filed 2007·Granted Feb 7, 2012·17 cites·11 claims
- 1094US9441129B2Ink for inkjet recording, ink container, and inkjet recording deviceKATOH KEITA·Filed 2015·Granted Sep 13, 2016·6 cites·7 claims
- 1193US8960885B2Ink for inkjet recording, and ink cartridge, inkjet recording method, inkjet recorder, ink-recorded matter and method of producing the ink-recorded matter using the inkKATOH KEITA·Filed 2013·Granted Feb 24, 2015·7 cites·2 claims
- 1292US8974895B2Inkjet ink, ink storage container, inkjet recording device, and recorded matterNARUSE MITSURU·Filed 2014·Granted Mar 10, 2015·7 cites·7 claims
- 1392US8328343B2Recording ink as well as ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording methodARUGA TAMOTSU·Filed 2010·Granted Dec 11, 2012·7 cites·6 claims
- 1492US8252207B2Ink for inkjet recording, ink set for inkjet recording, ink media set for inkjet recording, ink cartridge, inkjet recording method, and inkjet recording apparatusNAMBA MICHIHIKO·Filed 2007·Granted Aug 28, 2012·10 cites·20 claims
- 1592US6844124B2Electrophotographic photoreceptor, method for manufacturing the photoreceptor, and image forming method and apparatus using the photoreceptorRICOH KK·Filed 2003·Granted Jan 18, 2005·31 cites·9 claims
- 1691US9034091B2Inkjet recording ink set, inkjet recording method, and recorded matterMATSUYAMA AKIHIKO·Filed 2011·Granted May 19, 2015·6 cites·20 claims
- 1791US6858362B2Electrophotographic photoreceptor, and image forming method and apparatus using the photoreceptorRICOH KK·Filed 2003·Granted Feb 22, 2005·24 cites·20 claims
- 1889US11274221B2Ink, ink set, ink container, image forming method, image forming apparatus and recorded matterRICOH CO LTD·Filed 2018·Granted Mar 15, 2022·2 cites·12 claims
- 1989US10233341B2Ink, method of manufacturing ink, and ink cartridgeKOIZUKA YUUSUKE·Filed 2016·Granted Mar 19, 2019·2 cites·6 claims
- 2088US9028056B1Ink for inkjet recording, ink container, inkjet recorder and recorded matterNARUSE MITSURU·Filed 2014·Granted May 12, 2015·4 cites·17 claims
- 2187US9359522B2Ink composition, ink cartridge, inkjet recording device, and inkjet printed matterRICOH CO LTD·Filed 2014·Granted Jun 7, 2016·9 cites·12 claims
- 2285US10113078B2Ink discharge device and ink discharge methodKATOH KEITA·Filed 2017·Granted Oct 30, 2018·2 cites·12 claims
- 2385US9217089B2Ink for inkjet recordingNAGAI KAZUKIYO·Filed 2014·Granted Dec 22, 2015·8 cites·18 claims
- 2485US8945294B2Ink composition for inkjet recording, inkjet recording method, and inkjet recorded materialMATSUYAMA AKIHIKO·Filed 2012·Granted Feb 3, 2015·8 cites·10 claims
- 2585US8752948B2Inkjet recording ink containing fluorine based surfactant, inkjet recording ink set, and inkjet recording apparatus containing the inkjet recording inkTAMAI TAKASHI·Filed 2011·Granted Jun 17, 2014·3 cites·15 claims
- 2684US8778071B2Inkjet ink set, image forming method using same, and print formed by the image forming methodMATSUYAMA AKIHIKO·Filed 2012·Granted Jul 15, 2014·3 cites·9 claims
- 2784US8727523B2Inkjet recording ink, ink cartridge and inkjet recording methodTAMAI TAKASHI·Filed 2012·Granted May 20, 2014·3 cites·18 claims
- 2882US8580159B2Ink for inkjet recording, ink set for inkjet recording, ink media set for inkjet recording, ink cartridge, inkjet recording method, and inkjet recording apparatusNAMBA MICHIHIKO·Filed 2012·Granted Nov 12, 2013·2 cites·20 claims
- 2982US8317913B2Inkjet ink, and ink cartridge, inkjet recording method, inkjet recording apparatus and ink record using the sameHATADA SHIGEO·Filed 2008·Granted Nov 27, 2012·5 cites·6 claims
- 3079US8651650B2Inkjet recording ink, inkjet recording inkset, ink cartridge, inkjet recording method, and recorded matterMATSUYAMA AKIHIKO·Filed 2009·Granted Feb 18, 2014·3 cites·11 claims
- 3177US10844235B2Ink, method of manufacturing ink, and ink cartridgeRICOH CO LTD·Filed 2019·Granted Nov 24, 2020·0 cites·20 claims
- 3277US9777091B2Copolymer, ink, and ink containerFUKUOKA MASAYUKI·Filed 2015·Granted Oct 3, 2017·1 cites·18 claims
- 3377US9056993B2Ink composition, inkjet recording method, and printed matterRICOH CO LTD·Filed 2013·Granted Jun 16, 2015·1 cites·11 claims
- 3471US9752037B2Inkjet recording ink, ink cartridge, inkjet recording method, inkjet recording device and ink recorded matterHAKIRI MINORU·Filed 2014·Granted Sep 5, 2017·1 cites·9 claims
- 3566US7060404B2Electrophotographic photoreceptor, method for manufacturing the electrophotographic photoreceptor and image forming apparatus using the electrophotographic photoreceptorRICOH KK·Filed 2002·Granted Jun 13, 2006·8 cites·6 claims
- 3665US9267046B2Inkjet ink, ink cartridge, inkjet recording device, and inkjet printed matterRICOH CO LTD·Filed 2015·Granted Feb 23, 2016·0 cites·11 claims
- 3765US9150745B2Inkjet ink, ink cartridge, inkjet recording device, and inkjet printed matterRICOH CO LTD·Filed 2013·Granted Oct 6, 2015·0 cites·15 claims
- 3863US8383700B2Pigment dispersion, recording ink, ink cartridge, ink-jet recording method and ink-jet recording apparatusRICOH CO LTD·Filed 2012·Granted Feb 26, 2013·1 cites·19 claims
- 3962US9102841B2Yellow ink composition for inkjet recording, and inkjet recording method and inkjet recorded materialRICOH CO LTD·Filed 2013·Granted Aug 11, 2015·1 cites·17 claims
- 4061US11059983B2Ink, ink container, inkjet recording device, and recording methodMATSUYAMA AKIHIKO·Filed 2019·Granted Jul 13, 2021·0 cites·14 claims
- 4160US10836171B2Ink and cleaning liquid set, inkjet printing device, inkjet printing method, and method of cleaning nozzle surface of inkjet discharging headSAGARA Amika·Filed 2019·Granted Nov 17, 2020·0 cites·10 claims
- 4258US8680175B2Inkjet ink, and ink cartridge, inkjet recording method, inkjet recording apparatus and ink record using the sameHATADA SHIGEO·Filed 2012·Granted Mar 25, 2014·0 cites·6 claims
- 4357US11499062B2Ink, ink set, ink container, image forming method, and image forming apparatusRICOH CO LTD·Filed 2018·Granted Nov 15, 2022·0 cites·13 claims
- 4457US9896530B2Copolymer, coloring material dispersion, ink, and ink store containerHARADA SHIGEYUKI·Filed 2016·Granted Feb 20, 2018·0 cites·10 claims
- 4556US9217091B2Inkjet recording ink and ink cartridge using the ink, inkjet recording apparatus, inkjet recording method and ink recorded matterKATOH KEITA·Filed 2014·Granted Dec 22, 2015·0 cites·6 claims
- 4655US10370548B2Copolymer, ink including copolymer, and ink-stored containerHARADA SHIGEYUKI·Filed 2017·Granted Aug 6, 2019·0 cites·8 claims
- 4755US9850335B2Copolymer, aqueous ink, and ink cartridgeRICOH CO LTD·Filed 2015·Granted Dec 26, 2017·0 cites·13 claims
- 4855US9309427B2Ink composition, ink cartridge, inkjet recording device, and inkjet printed matterMATSUYAMA AKIHIKO·Filed 2014·Granted Apr 12, 2016·0 cites·14 claims
- 4955US8523992B2Magenta recording ink composition, inkjet recording method, and ink recorded matterMATSUYAMA AKIHIKO·Filed 2009·Granted Sep 3, 2013·0 cites·15 claims
- 5055US2007197685A1Recording ink as well as ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording methodARUGA TAMOTSU·Filed 2007·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →