Inventor · disambiguated record
Yoshiki Yanagawa
Also filed as: YANAGAWA YOSHIKI
44 granted patents·6 pending applications·106 citations·filing 2004–2019
96Inventor score
Top patents by PatentIndex Score
50 records- 0196US7416823B2Electrophotographic photoconductor, and image formation method, image formation apparatus, and process cartridge for image formation apparatus using the sameRICOH KK·Filed 2005·Granted Aug 26, 2008·27 cites·10 claims
- 0295US9850391B2Ink, ink stored container, inkjet printing method, and inkjet printing deviceFUKUOKA MASAYUKI·Filed 2016·Granted Dec 26, 2017·8 cites·15 claims
- 0390US7851119B2Electrophotographic photoconductor, method for producing the same, image forming process, image forming apparatus and process cartridgeRICOH CO LTD·Filed 2007·Granted Dec 14, 2010·12 cites·6 claims
- 0489US10233341B2Ink, method of manufacturing ink, and ink cartridgeKOIZUKA YUUSUKE·Filed 2016·Granted Mar 19, 2019·2 cites·6 claims
- 0588US9353274B1Ink, ink cartridge, inkjet recording device, and copolymerKATOH KEITA·Filed 2015·Granted May 31, 2016·2 cites·10 claims
- 0688US7871747B2Electrophotographic photoconductor having charge blocking and moire preventing layersRICOH CO LTD·Filed 2006·Granted Jan 18, 2011·9 cites·7 claims
- 0787US7473504B2Electrophotographic photoreceptor, and image forming method, apparatus and process cartridge therefor using the photoreceptorRICOH KK·Filed 2005·Granted Jan 6, 2009·9 cites·15 claims
- 0885US10113078B2Ink discharge device and ink discharge methodKATOH KEITA·Filed 2017·Granted Oct 30, 2018·2 cites·12 claims
- 0985US7937025B2Scorotron corona charger, process cartridge, and image forming apparatusRICOH CO LTD·Filed 2009·Granted May 3, 2011·7 cites·3 claims
- 1080US9406887B2Solution, organic semiconductor material, organic semiconductor film, electronic device and electronic equipmentARAI RYOTA·Filed 2014·Granted Aug 2, 2016·2 cites·7 claims
- 1177US10844235B2Ink, method of manufacturing ink, and ink cartridgeRICOH CO LTD·Filed 2019·Granted Nov 24, 2020·0 cites·20 claims
- 1277US9777091B2Copolymer, ink, and ink containerFUKUOKA MASAYUKI·Filed 2015·Granted Oct 3, 2017·1 cites·18 claims
- 1376US8530124B2Hydroxygallium phthalocyanine composite pigment, electrophotographic photoconductor containing the same, and image forming device and process cartridge for image forming device using the sameSAKAGUCHI HIROMI·Filed 2010·Granted Sep 10, 2013·2 cites·9 claims
- 1475US9590187B2Substituent-eliminable diketopyrrolopyrrole derivative, organic semiconductor material precursor solution, organic semiconductor material, and organic semiconductor material filmARAI RYOTA·Filed 2014·Granted Mar 7, 2017·1 cites·3 claims
- 1575US7390600B2Latent electrostatic image bearing member, process cartridge, image forming apparatus, and image forming processRICOH KK·Filed 2005·Granted Jun 24, 2008·4 cites·22 claims
- 1672US7629103B2Photoconductor, manufacturing method thereof, image forming process and image forming apparatus using photoconductor, and process cartridgeRICOH KK·Filed 2005·Granted Dec 8, 2009·4 cites·14 claims
- 1771US9196843B2Fullerene derivative, and method of preparing the sameYANAGAWA YOSHIKI·Filed 2013·Granted Nov 24, 2015·1 cites·2 claims
- 1868US8383304B2Gallium phthalocyanine compound, and image bearing member, image forming method, image forming apparatus, and process cartridge using the gallium phthalocyanine compoundRICOH CO LTD·Filed 2011·Granted Feb 26, 2013·1 cites·12 claims
- 1962US9365513B2Fullerene derivative, and method of preparing the sameYANAGAWA YOSHIKI·Filed 2014·Granted Jun 14, 2016·1 cites·8 claims
- 2062US7879519B2Image bearing member and image forming apparatus using the sameRICOH CO LTD·Filed 2008·Granted Feb 1, 2011·2 cites·20 claims
- 2160US11040561B2Ink and processing liquid set, image forming method, and image forming deviceTAMAI TAKASHI·Filed 2019·Granted Jun 22, 2021·0 cites·20 claims
- 2260US10730319B2Drying device, liquid discharge apparatus, and drying methodNISHIMURA HIDEAKI·Filed 2019·Granted Aug 4, 2020·0 cites·16 claims
- 2360US7556903B2Electrophotographic photoreceptor, and image forming method, apparatus and process cartridge therefor using the photoreceptorRICOH KK·Filed 2004·Granted Jul 7, 2009·7 cites·20 claims
- 2458US9365670B2Copolymer, aqueous ink, and ink cartridgeHARADA SHIGEYUKI·Filed 2015·Granted Jun 14, 2016·0 cites·8 claims
- 2558US8059992B2Corona charger, and process cartridge and image forming apparatus using sameYASUDA MAKOTO·Filed 2008·Granted Nov 15, 2011·1 cites·19 claims
- 2657US10011729B2Ink, method for producing ink, ink storage container, recording device, and recording methodYANAGAWA YOSHIKI·Filed 2017·Granted Jul 3, 2018·0 cites·16 claims
- 2757US9896530B2Copolymer, coloring material dispersion, ink, and ink store containerHARADA SHIGEYUKI·Filed 2016·Granted Feb 20, 2018·0 cites·10 claims
- 2855US10370548B2Copolymer, ink including copolymer, and ink-stored containerHARADA SHIGEYUKI·Filed 2017·Granted Aug 6, 2019·0 cites·8 claims
- 2955US9850335B2Copolymer, aqueous ink, and ink cartridgeRICOH CO LTD·Filed 2015·Granted Dec 26, 2017·0 cites·13 claims
- 3054US8335456B2Image forming apparatus, image forming method, and process cartridgeKAWASAKI YOSHIAKI·Filed 2007·Granted Dec 18, 2012·1 cites·7 claims
- 3153US8227156B2Electrophotographic photoconductor, image forming apparatus, image forming method, and process cartridgeSHIMOYAMA KEISUKE·Filed 2010·Granted Jul 24, 2012·0 cites·7 claims
- 3251US10280321B2Ink, ink container, inkjet recording device, and recorded matterMATSUYAMA AKIHIKO·Filed 2016·Granted May 7, 2019·0 cites·19 claims
- 3351US10035869B2Copolymer, aqueous ink, and ink cartridgeHARADA SHIGEYUKI·Filed 2016·Granted Jul 31, 2018·0 cites·10 claims
- 3451US8207312B2Method of preparing complex-AZO pigment and complex-AZO pigment thereofOHTA MASAFUMI·Filed 2009·Granted Jun 26, 2012·0 cites·10 claims
- 3550US8557489B2Gallium phthalocyanine compound, gallium phthalocyanine composite pigment, method for preparing gallium phthalocyanine composite pigment, and electrophotographic photoconductorSAKAGUCHI HIROMI·Filed 2010·Granted Oct 15, 2013·0 cites·6 claims
- 3650US2010209842A1Electrophotographic photoreceptor and method of preparing the photoreceptor, and image forming method, image forming apparatus and process cartridge therefor using the photoreceptorYANAGAWA YOSHIKI·Filed 2010·Application pending·0 cites
- 3749US10000656B2Ink, recorded matter, ink container, recording device, and recording methodYANAGAWA YOSHIKI·Filed 2016·Granted Jun 19, 2018·0 cites·10 claims
- 3849US2021129516A1Laminate, method of manufacturing laminate, and device for manufacturing laminateYANAGAWA YOSHIKI·Filed 2018·Application pending·0 cites
- 3948US10603929B2Drying device and image forming apparatusIWASAKI RYOTA·Filed 2018·Granted Mar 31, 2020·0 cites·17 claims
- 4048US9988543B2Ink, ink stored container, inkjet recording apparatus, and recorded matterMATSUYAMA AKIHIKO·Filed 2016·Granted Jun 5, 2018·0 cites·9 claims
- 4147US10273373B2Ink and method for producing same, and ink stored container, printing method, and printing apparatusKOIZUKA YUUSUKE·Filed 2017·Granted Apr 30, 2019·0 cites·12 claims
- 4246US7855040B2Method for preparing photoreceptor, photoreceptor prepared by the method, and image forming method and apparatus and process cartridge using the photoreceptorRICOH CO LTD·Filed 2007·Granted Dec 21, 2010·0 cites·16 claims
- 4346US2007009818A1Electrophotographic photoreceptor and method of preparing the photoreceptor, and image forming method, image forming apparatus and process cartridge therefor using the photoreceptorYANAGAWA YOSHIKI·Filed 2006·Application pending·0 cites
- 4442US11161354B2Drying device and printer incorporating the drying deviceTAKEHIRA OSAMU·Filed 2019·Granted Nov 2, 2021·0 cites·9 claims
- 4541US8197997B2Electrophotographic photoconductor, production method thereof, image forming method and image forming apparatus using photoconductor, and process cartridgeYANAGAWA YOSHIKI·Filed 2007·Granted Jun 12, 2012·0 cites·9 claims
- 4641US8114563B2Electrophotographic photoreceptor and method of preparing the photoreceptor, and image forming method, image forming apparatus and process cartridge therefor using the photoreceptorHIROSE MITSUAKI·Filed 2007·Granted Feb 14, 2012·0 cites·10 claims
- 4738US2007212627A1Electrophotographic photoreceptor and method of preparing the photoreceptor, and image forming method, image forming apparatus and process cartridge therefor using the photoreceptorYANAGAWA YOSHIKI·Filed 2007·Application pending·0 cites
- 4837US2005287452A1Photoconductor, image forming process, image forming apparatus, and process cartridgeTAMURA HIROSHI·Filed 2005·Application pending·0 cites
- 4937US2005221210A1Electrophotographic photoconductor and image formation method, image formation apparatus, and process cartridge for image formation apparatus using the electrophotographic photoconductorSUZUKI TETSURO·Filed 2005·Application pending·0 cites
- 5036US8206880B2Electrophotographic photoreceptor, and image forming apparatus and process cartridge therefor using the photoreceptorTADA HIROMI·Filed 2010·Granted Jun 26, 2012·0 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →