Inventor · disambiguated record
Yoshimichi Ishikawa
Also filed as: ISHIKAWA YOSHIMICHI
37 granted patents·19 pending applications·97 citations·filing 2006–2019
96Inventor score
Technology areasG03G
Top patents by PatentIndex Score
56 records- 0193US7749671B2Toner for developing a latent electrostatic image, image-forming method, image-forming apparatus and process cartridge using the sameRICOH KK·Filed 2006·Granted Jul 6, 2010·15 cites·9 claims
- 0289US7838193B2Toner and image forming method using the tonerRICOH CO LTD·Filed 2007·Granted Nov 23, 2010·10 cites·20 claims
- 0388US7727694B2Toner for developing electrostatic image, and image forming method and apparatus and process cartridge using the tonerRICOH KK·Filed 2007·Granted Jun 1, 2010·9 cites·14 claims
- 0487US7785760B2Toner and method of preparing the tonerRICOH KK·Filed 2007·Granted Aug 31, 2010·9 cites·22 claims
- 0586US8518625B2Toner, image forming apparatus, image forming method and process cartridgeFUKAO TOMOHIRO·Filed 2011·Granted Aug 27, 2013·5 cites·18 claims
- 0684US9285695B2Latent electrostatic image developing tonerMIKI TOMOHARU·Filed 2012·Granted Mar 15, 2016·4 cites·20 claims
- 0784US7817946B2Developing device, image developing method, image forming apparatus, image forming method, and process cartridgeRICOH KK·Filed 2007·Granted Oct 19, 2010·7 cites·12 claims
- 0882US8614040B2Electrostatic image developing toner, toner container and process cartridgeFUKAO TOMOHIRO·Filed 2012·Granted Dec 24, 2013·3 cites·16 claims
- 0982US7833686B2Toner and method for producing the same, toner kit, and developer, process cartridge, image forming method and image forming apparatusRICOH CO LTD·Filed 2006·Granted Nov 16, 2010·6 cites·19 claims
- 1081US7867685B2Image forming method and apparatusRICOH CO LTD·Filed 2007·Granted Jan 11, 2011·5 cites·9 claims
- 1180US8110330B2Toner, developer, toner container, process cartridge, image forming method, and image forming apparatusISHIKAWA YOSHIMICHI·Filed 2007·Granted Feb 7, 2012·6 cites·9 claims
- 1276US8642238B2Toner, developer and method for producing tonerNOZAKI TSUYOSHI·Filed 2012·Granted Feb 4, 2014·2 cites·19 claims
- 1376US8623581B2Electrostatic image developing toner, developer, and image forming apparatusFUKAO TOMOHIRO·Filed 2012·Granted Jan 7, 2014·2 cites·20 claims
- 1474US7903998B2Image forming apparatusRICOH CO LTD·Filed 2008·Granted Mar 8, 2011·4 cites·10 claims
- 1569US9098013B2Developing roller, developing device, process cartridge, and image forming apparatusYASUNAGA HIDEAKI·Filed 2014·Granted Aug 4, 2015·1 cites·10 claims
- 1669US8435709B2Toner for developing latent electrostatic image, process cartridge and image forming methodYAMAMOTO ATSUSHI·Filed 2008·Granted May 7, 2013·3 cites·7 claims
- 1765US8268527B2Toner, developer, developing device, process cartridge, image forming apparatus, image forming method, and method of manufacturing tonerKADOTA TAKUYA·Filed 2010·Granted Sep 18, 2012·1 cites·17 claims
- 1861US11106150B2Carrier, developer, method, and apparatus for forming electrophotographic image, and process cartridgeRICOH CO LTD·Filed 2019·Granted Aug 31, 2021·0 cites·14 claims
- 1959US2015198901A1Toner, developing device, and process cartridgeNOZAKI TSUYOSHI·Filed 2014·Application pending·0 cites
- 2058US9971260B2Toner, developing device, and process cartridgeNOZAKI TSUYOSHI·Filed 2016·Granted May 15, 2018·0 cites·7 claims
- 2158US8043779B2Pulverized tonerRICOH CO LTD·Filed 2007·Granted Oct 25, 2011·1 cites·10 claims
- 2257US8309290B2Toner and method of manufacturing the sameYAMAMOTO ATSUSHI·Filed 2007·Granted Nov 13, 2012·1 cites·15 claims
- 2357US8012658B2Toner for developing electrostatic image, and image forming apparatus and process cartridge using the tonerRICOH CO LTD·Filed 2008·Granted Sep 6, 2011·1 cites·14 claims
- 2456US8354164B2Semiconductive member, and developing roll, charging roll, transfer belt, and image forming apparatus using sameRICOH CO LTD·Filed 2009·Granted Jan 15, 2013·1 cites·4 claims
- 2556US8053154B2Toner and image forming methodRICOH CO LTD·Filed 2007·Granted Nov 8, 2011·1 cites·12 claims
- 2652US8440380B2Toner and method for producing the sameYAMAMOTO ATSUSHI·Filed 2010·Granted May 14, 2013·0 cites·11 claims
- 2751US9417541B2Toner and image forming apparatusISHIKAWA YOSHIMICHI·Filed 2012·Granted Aug 16, 2016·0 cites·20 claims
- 2850US8216755B2Toner, developer, toner container, process cartridge, image forming apparatus, and image forming methodISHIKAWA YOSHIMICHI·Filed 2009·Granted Jul 10, 2012·0 cites·19 claims
- 2949US9563140B2TonerNOZAKI TSUYOSHI·Filed 2013·Granted Feb 7, 2017·0 cites·13 claims
- 3049US9268244B2Electrostatic image developing toner, image forming apparatus, image forming method, and process cartridgeFUKAO TOMOHIRO·Filed 2012·Granted Feb 23, 2016·0 cites·15 claims
- 3149US8139984B2Image forming method and apparatusMURAKAMI HIROYUKI·Filed 2010·Granted Mar 20, 2012·0 cites·13 claims
- 3247US8691484B2Toner and method for producing the same, toner container, developer, image forming apparatus and process cartridgeNOZAKI TSUYOSHI·Filed 2008·Granted Apr 8, 2014·0 cites·5 claims
- 3346US9709912B2Toner, and image forming method, process cartridge, and image forming apparatus using the tonerFUWA KAZUOKI·Filed 2013·Granted Jul 18, 2017·0 cites·4 claims
- 3445US9360824B2Image forming apparatus and process cartridgeFUKAO TOMOHIRO·Filed 2015·Granted Jun 7, 2016·0 cites·10 claims
- 3545US9182688B2Image forming apparatus, image forming method and process cartridgeKADOTA TAKUYA·Filed 2013·Granted Nov 10, 2015·0 cites·9 claims
- 3645US8647803B2Method for producing colored resin particles, colored resin particles, developer, image forming apparatus, image forming method, and process cartridgeYAMAMOTO ATSUSHI·Filed 2012·Granted Feb 11, 2014·0 cites·19 claims
- 3743US8871417B2Toner, image forming apparatus, and process cartridgeMIKI TOMOHARU·Filed 2010·Granted Oct 28, 2014·0 cites·11 claims
- 3842US2015078790A1Developing device, process cartridge, and image forming apparatusISHIKAWA YOSHIMICHI·Filed 2014·Application pending·0 cites
- 3942US2009220879A1Toner for developing latent electrostatic image, image forming device and process cartridge using the sameMATSUMOTO MITSUYO·Filed 2009·Application pending·0 cites
- 4041US2009017391A1Toner, method for manufacturing the toner, and process cartridge using the tonerYAMAMOTO ATSUSHI·Filed 2008·Application pending·0 cites
- 4140US2008227016A1Latent electrostatic image developing toner, image forming apparatus and image forming methodNOZAKI TSUYOSHI·Filed 2008·Application pending·0 cites
- 4240US2008069617A1Image forming apparatus, image forming method, and toner for developing electrostatic image for use in the image forming apparatus and methodMATSUMOTO MITSUYO·Filed 2007·Application pending·0 cites
- 4340US2008176159A1Toner, process cartridge and image forming apparatusMATSUMOTO MITSUYO·Filed 2008·Application pending·0 cites
- 4439US8431314B2Colored resin particle and method for producing the sameMIKURIYA YOSHIHIRO·Filed 2010·Granted Apr 30, 2013·0 cites·17 claims
- 4539US2007217842A1Cleaning device, image-forming apparatus, image-forming process, and process cartridgeKATO HIROAKI·Filed 2007·Application pending·0 cites
- 4639US2008233511A1Toner, and image forming apparatus and process cartridge using the sameISHIKAWA YOSHIMICHI·Filed 2008·Application pending·0 cites
- 4738US2008279591A1One-component toner and image forming methodYASUNAGA HIDEAKI·Filed 2007·Application pending·0 cites
- 4838US2012264048A1Toner, image forming method, image forming apparatus, and process cartridgeISHIKAWA YOSHIMICHI·Filed 2012·Application pending·0 cites
- 4937US2007238042A1Oilless-fixing toner, and image forming method, apparatus and process cartridge using the oilless-fixing tonerYASUNAGA HIDEAKI·Filed 2007·Application pending·0 cites
- 5036US2009233199A1Gloss control particle, developer set, and image forming methodNOZAKI CHIYOSHI·Filed 2009·Application pending·0 cites
Showing the top 50 of 56 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →