Inventor · disambiguated record
Masashi Nagayama
Also filed as: NAGAYAMA MASASHI
44 granted patents·21 pending applications·289 citations·filing 2002–2025
97Inventor score
Top patents by PatentIndex Score
65 records- 0197US7132210B2Image-forming color toner, developing agent, image-forming apparatus, toner container, image-forming process cartridge and image-forming processRICOH KK·Filed 2005·Granted Nov 7, 2006·27 cites·14 claims
- 0295US8728696B2Toner, image forming method, and process cartridgeYAMADA SAORI·Filed 2012·Granted May 20, 2014·23 cites·16 claims
- 0393US9170530B2Powder container and image forming apparatus incorporating sameOSHIKAWA YUKI·Filed 2011·Granted Oct 27, 2015·9 cites·19 claims
- 0493US7163774B2Toner for forming image, method for developing electrostatic latent image, method for fixing toner image, image forming method and process cartridge using the tonerRICOH KK·Filed 2004·Granted Jan 16, 2007·41 cites·49 claims
- 0591US7052815B2Color toner for developing electrostatic images, toner container containing the color toner, and image forming method and apparatus using the color tonerRICOH KK·Filed 2003·Granted May 30, 2006·30 cites·18 claims
- 0691US6939653B2Image-forming color toner, developing agent, image-forming apparatus, toner container, image-forming process cartridge and image-forming processRICOH KK·Filed 2002·Granted Sep 6, 2005·29 cites·17 claims
- 0790US7217485B2Toner for electrophotography, and image fixing process, image forming process, image forming apparatus and process cartridge using the sameRICOH KK·Filed 2004·Granted May 15, 2007·34 cites·18 claims
- 0888US7468233B2Developer for use in electrophotography, image forming method and process cartridgeRICOH KK·Filed 2005·Granted Dec 23, 2008·10 cites·20 claims
- 0988US7386266B2Image removing method, image removing device, and image forming apparatusRICOH KK·Filed 2006·Granted Jun 10, 2008·8 cites·13 claims
- 1087US9182694B2Toner, image forming apparatus, image forming method, and process cartridgeRICOH CO LTD·Filed 2013·Granted Nov 10, 2015·4 cites·20 claims
- 1187US8741529B2Image forming method, image forming apparatus, and process cartridgeAOKI MITSUO·Filed 2012·Granted Jun 3, 2014·5 cites·6 claims
- 1283US7060407B2Image removing method, image removing device, and image forming apparatusRICOH KK·Filed 2003·Granted Jun 13, 2006·18 cites·9 claims
- 1382US9348259B2Toner housing container and image forming apparatusRICOH CO LTD·Filed 2014·Granted May 24, 2016·3 cites·12 claims
- 1479US10274856B2Toner for electrophotography, image forming method, and process cartridgeNAKAJIMA HISASHI·Filed 2015·Granted Apr 30, 2019·2 cites·7 claims
- 1577US9128398B2Toner for forming electrophotographic image, method for manufacturing toner for forming electrophotographic image, image forming method, and process cartridgeNAGAYAMA MASASHI·Filed 2012·Granted Sep 8, 2015·2 cites·20 claims
- 1677US8086143B2Image forming apparatus for use with carrier including a core and cover layerNAGAYAMA MASASHI·Filed 2008·Granted Dec 27, 2011·5 cites·20 claims
- 1774US7235338B2Toner and image forming method and process cartridge for image forming apparatus using the tonerRICOH KK·Filed 2004·Granted Jun 26, 2007·13 cites·21 claims
- 1874US2025291267A1Electrophotographic developer, electrophotographic image forming method, electrophotographic image forming apparatus, and process cartridgeNAGAYAMA MASASHI·Filed 2025·Application pending·0 cites
- 1973US2025306493A1Carrier, two-component developing agent, process cartridge, image forming apparatus, and image forming methodKISHIDA HIROYUKI·Filed 2025·Application pending·0 cites
- 2072US9482971B2White toner, and image forming method and image forming apparatus using the white tonerSUZUKI KAZUMI·Filed 2015·Granted Nov 1, 2016·1 cites·20 claims
- 2168US9005862B2Toner, image forming method, and process cartridgeNAGAYAMA MASASHI·Filed 2013·Granted Apr 14, 2015·1 cites·17 claims
- 2268US8067141B2Electrographic carrier, developer, developing method, image forming apparatus, and process cartridgeYAMAGUCHI KIMITOSHI·Filed 2007·Granted Nov 29, 2011·3 cites·8 claims
- 2367US8524436B2Developing device, image forming method and apparatus, and process cartridgeNAGAYAMA MASASHI·Filed 2011·Granted Sep 3, 2013·1 cites·14 claims
- 2467US7763410B2Electrophotographic developing carrier, associated apparatus and methodology of classification and applicationRICOH KK·Filed 2004·Granted Jul 27, 2010·8 cites·7 claims
- 2565US12436479B2Carrier for forming electrophotographic image, developer for forming electrophotographic image, electrophotographic image forming method, electrophotographic image forming apparatus, and process cartridgeNAGAYAMA MASASHI·Filed 2021·Granted Oct 7, 2025·0 cites·16 claims
- 2665US8026032B2Carrier, supplemental developer, developer in image developer, developer feeding apparatus, image forming apparatus and process cartridgeRICOH CO LTD·Filed 2007·Granted Sep 27, 2011·2 cites·24 claims
- 2764US12105472B2Carrier for forming electrophotographic image, developing agent for forming electrophotographic image, method of forming electrophotographic image, electrophotographic image forming apparatus, and process cartridgeTAKEUCHI KENTO·Filed 2023·Granted Oct 1, 2024·0 cites·14 claims
- 2863US12147192B2Carrier for developing electrostatic latent image, two-component developer, image forming apparatus, process cartridge, and image forming methodKISHIDA HIROYUKI·Filed 2022·Granted Nov 19, 2024·0 cites·9 claims
- 2962US12306582B2Carrier for forming electrophotographic image, developer for forming electrophotographic image, electrophotographic image forming method, electrophotographic image forming apparatus, and process cartridgeNAGAYAMA MASASHI·Filed 2020·Granted May 20, 2025·0 cites·15 claims
- 3062US9765731B2Canister arrangement structure for saddle-ride type vehicleHONDA MOTOR CO LTD·Filed 2013·Granted Sep 19, 2017·3 cites·14 claims
- 3161US11106150B2Carrier, developer, method, and apparatus for forming electrophotographic image, and process cartridgeRICOH CO LTD·Filed 2019·Granted Aug 31, 2021·0 cites·14 claims
- 3261US8905419B2Rear structure of saddle-ride type vehicleHONDA MOTOR CO LTD·Filed 2013·Granted Dec 9, 2014·2 cites·20 claims
- 3360US12379678B2Carrier for forming electrophotographic image, developer, image forming method, image forming apparatus, and process cartridgeSUZUKI NAMIE·Filed 2022·Granted Aug 5, 2025·0 cites·12 claims
- 3460US12372893B2Carrier, developer, image forming method, and process cartridgeMASUKO KAEDE·Filed 2022·Granted Jul 29, 2025·0 cites·10 claims
- 3557US11934145B2Developing apparatus, developer for electrophotographic image formation, electrophotographic image forming method, and electrophotographic image forming apparatusMASUDA MINORU·Filed 2022·Granted Mar 19, 2024·0 cites·5 claims
- 3657US10474051B2Carrier for developer of electrostatic latent image, two-component developer, replenishing developer, image forming apparatus, and toner stored unitTAKII MARIKO·Filed 2018·Granted Nov 12, 2019·0 cites·11 claims
- 3757US8039189B2Electrophotographic developer and carrier therefor, core material particle for carrier for electrophotographic developer and production method thereof and image forming methodRICOH CO LTD·Filed 2007·Granted Oct 18, 2011·1 cites·4 claims
- 3856US10203620B2Toner, image forming method, and process cartridgeNAITO YU·Filed 2014·Granted Feb 12, 2019·0 cites·6 claims
- 3956US9946177B2Carrier, two-component developer, image forming apparatus, process cartridge, and image forming methodMURASAWA YOSHIHIRO·Filed 2017·Granted Apr 17, 2018·0 cites·18 claims
- 4055US8728698B2Carrier, developer, image forming method and process cartridgeNAGAYAMA MASASHI·Filed 2007·Granted May 20, 2014·1 cites·26 claims
- 4154US8757312B2Frame structure for saddle-ride type vehicleHONDA MOTOR CO LTD·Filed 2013·Granted Jun 24, 2014·2 cites·20 claims
- 4251US10444651B2Carrier, developer, supplemental developer, image forming apparatus, image forming method, and process cartridgeTAKII MARIKO·Filed 2018·Granted Oct 15, 2019·0 cites·11 claims
- 4351US2024302763A1Image forming method, carrier, developer, and image forming apparatusMASUDA MINORU·Filed 2024·Application pending·0 cites
- 4451US2024295834A1Carrier, developing agent, image forming method, image forming apparatus, and process cartridgeNAGAYAMA MASASHI·Filed 2024·Application pending·0 cites
- 4547US8213833B2Image forming apparatus, process cartridge, image forming method and developer for electrophotographyYAGI SHINICHIRO·Filed 2008·Granted Jul 3, 2012·1 cites·11 claims
- 4647US2008073252A1Electrophotographic developing carrier, associated apparatus and methodology of classification and applicationYAMAGUCHI KIMITOSHI·Filed 2007·Application pending·0 cites
- 4747US2023305439A1Carrier for electrophotographic image formation, developer for electrophotographic image formation, electrophotographic image forming method, electrophotographic image forming apparatus, and process cartridgeNAGAYAMA MASASHI·Filed 2023·Application pending·0 cites
- 4846US2006222987A1Image-forming color toner, developing agent, image-forming apparatus, toner container, image-forming process cartridge and image-forming processSUZUKI MASANORI·Filed 2006·Application pending·0 cites
- 4945US2005277046A1Color toner for developing electrostatic images, toner container containing the color toner, and image forming method and apparatus using the color tonerSAWADA TOYOSHI·Filed 2005·Application pending·0 cites
- 5044US10025214B2Carrier, developing agent, image forming apparatus, image forming method, replenishment toner, and process cartridgeNAGAYAMA MASASHI·Filed 2016·Granted Jul 17, 2018·0 cites·10 claims
Showing the top 50 of 65 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →