Inventor · disambiguated record
Akihiro Kotsugai
Also filed as: KOTSUGAI AKIHIRO
51 granted patents·8 pending applications·1,295 citations·filing 1992–2021
99Inventor score
Top patents by PatentIndex Score
59 records- 0199US7374851B2Toner, and, developer, toner container, process cartridge, image forming apparatus and image forming methodRICOH KK·Filed 2006·Granted May 20, 2008·67 cites·25 claims
- 0299US7318989B2Toner, developer, toner container, process cartridge, image forming apparatus, and image forming methodRICOH KK·Filed 2006·Granted Jan 15, 2008·71 cites·14 claims
- 0398US7455942B2Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method using the sameRICOH KK·Filed 2005·Granted Nov 25, 2008·41 cites·19 claims
- 0498US7258959B2Toner for electrophotography and image forming apparatusRICOH KK·Filed 2005·Granted Aug 21, 2007·42 cites·34 claims
- 0598US6653037B2Toner for developing latent electrostatic images, and image forming method and deviceRICOH KK·Filed 2001·Granted Nov 25, 2003·91 cites·39 claims
- 0698US5368972AMethod of preparing composite particles comprising adhering wax particles to the surface of resin particlesRICOH KK·Filed 1993·Granted Nov 29, 1994·107 cites·20 claims
- 0796US7521164B2Toner, and, developer, toner container, process cartridge, image forming apparatus and image forming methodRICOH KK·Filed 2008·Granted Apr 21, 2009·22 cites·7 claims
- 0896US6716561B2Toner for developing electrostatic latent image and image forming method using sameRICOH KK·Filed 2001·Granted Apr 6, 2004·75 cites·14 claims
- 0995US6472118B1Carrier for developer for electrophotographyRICOH KK·Filed 2000·Granted Oct 29, 2002·43 cites·14 claims
- 1095US6168894B1Image forming method and dry toner thereforRICOH KK·Filed 1996·Granted Jan 2, 2001·79 cites·40 claims
- 1194US7368213B2Toner and fixing device and image forming device using the sameRICOH KK·Filed 2005·Granted May 6, 2008·17 cites·19 claims
- 1294US6852459B2Color toner, method for manufacturing the toner, and image forming apparatus and method using the tonerRICOH KK·Filed 2002·Granted Feb 8, 2005·53 cites·15 claims
- 1393US6004715AToner for developing electrostatic imagesRICOH KK·Filed 1996·Granted Dec 21, 1999·75 cites·15 claims
- 1493US5429901AToner for use in electrostatic developmentRICOH KK·Filed 1993·Granted Jul 4, 1995·61 cites·5 claims
- 1592US6743558B2Carrier for electrophotographic developerRICOH KK·Filed 2002·Granted Jun 1, 2004·41 cites·22 claims
- 1691US7566521B2Toner, developer, toner container, process cartridge, image forming apparatus, and image forming methodRICOH KK·Filed 2007·Granted Jul 28, 2009·11 cites·16 claims
- 1790US6489073B2Method and device for developing electrostatic latent imagesRICOH KK·Filed 2001·Granted Dec 3, 2002·34 cites·18 claims
- 1889US6739534B2Carrier for developer for electrophotographyRICOH KK·Filed 2003·Granted May 25, 2004·24 cites·7 claims
- 1989US6599672B2Carrier for developer for electrophotographyRICOH KK·Filed 2002·Granted Jul 29, 2003·24 cites·4 claims
- 2088US6010814AElectrophotographic toner composition and image formation method using the compositionRICOH KK·Filed 1998·Granted Jan 4, 2000·42 cites·9 claims
- 2188US5912100AToner for developing electrostatic imagesRICOH KK·Filed 1997·Granted Jun 15, 1999·48 cites·10 claims
- 2287US7049037B2Color toner, method for manufacturing the toner, and image forming apparatus and method using the tonerRICOH KK·Filed 2004·Granted May 23, 2006·25 cites·9 claims
- 2385US7368212B2Toner for developing electrostatic image, developer, image forming apparatus, process for forming image, process cartridge and process for measuring porosity of tonerRICOH KK·Filed 2004·Granted May 6, 2008·23 cites·18 claims
- 2485US7192679B2Carrier for electrophotographic developerRICOH KK·Filed 2004·Granted Mar 20, 2007·24 cites·22 claims
- 2585US6696213B2Method of developing a latent electrostatic imageRICOH KK·Filed 2002·Granted Feb 24, 2004·24 cites·10 claims
- 2684US7608377B2Image forming method and image forming apparatusRICOH KK·Filed 2006·Granted Oct 27, 2009·7 cites·15 claims
- 2782US5418103AToner for developing latent electrostatic imagesRICOH KK·Filed 1992·Granted May 23, 1995·28 cites·11 claims
- 2880US8263302B2Carrier for electrophotography and two-component developerMORIYA YOSHIHIRO·Filed 2009·Granted Sep 11, 2012·6 cites·9 claims
- 2979US8007974B2Toner, image forming apparatus using the same, image forming method using the same, and process cartridgeRICOH CO LTD·Filed 2007·Granted Aug 30, 2011·5 cites·23 claims
- 3078US8114560B2Toner, image forming apparatus, image forming method, and process cartridge using the tonerNAKAYAMA SHINYA·Filed 2008·Granted Feb 14, 2012·5 cites·18 claims
- 3178US7709174B2Toner, method of preparing the toner, and developer, image forming method, image forming apparatus, and process cartridge using the tonerRICOH KK·Filed 2006·Granted May 4, 2010·5 cites·20 claims
- 3277US7442484B2Image forming method using tonerRICOH KK·Filed 2004·Granted Oct 28, 2008·16 cites·13 claims
- 3377US6735409B2Process for developing, image-forming apparatus, and image-forming process cartridgeRICOH KK·Filed 2003·Granted May 11, 2004·16 cites·17 claims
- 3475US7862973B2Toner and developer, and image forming apparatus, image forming method and process cartridgeRICOH CO LTD·Filed 2007·Granted Jan 4, 2011·4 cites·22 claims
- 3573US8679714B2Toner, developer, and image forming methodINOUE RYOTA·Filed 2010·Granted Mar 25, 2014·2 cites·12 claims
- 3671US8017292B2Toner, as well as image forming apparatus and image forming method using the sameRICOH CO LTD·Filed 2008·Granted Sep 13, 2011·3 cites·10 claims
- 3769US6939654B2Carrier and developer for developing latent electrostatic imagesRICOH KK·Filed 2003·Granted Sep 6, 2005·10 cites·29 claims
- 3867US8771914B2Toner for developing latent electrostatic image, two-component developer, image forming method and image forming apparatusKOTSUGAI AKIHIRO·Filed 2008·Granted Jul 8, 2014·3 cites·7 claims
- 3966US8741520B2Image forming toner, image forming apparatus, image forming method, and process cartridgeSAWADA TOYOSHI·Filed 2009·Granted Jun 3, 2014·2 cites·15 claims
- 4065US7320852B2Carrier for developer for developing electrostatic latent image, developer using same and image forming method using sameRICOH KK·Filed 2003·Granted Jan 22, 2008·9 cites·18 claims
- 4164US7547497B2Toner, and developer, image developer and image forming apparatus using the tonerRICOH KK·Filed 2005·Granted Jun 16, 2009·2 cites·11 claims
- 4263US7960083B2Image forming apparatus, image forming method, and process cartridgeRICOH CO LTD·Filed 2008·Granted Jun 14, 2011·2 cites·1 claims
- 4359US8383307B2Toner, developer, and image forming method and apparatus using the tonerRICOH CO LTD·Filed 2009·Granted Feb 26, 2013·1 cites·15 claims
- 4455US7642032B2Toner, developer, image forming apparatus and image forming methodRICOH KK·Filed 2004·Granted Jan 5, 2010·5 cites·10 claims
- 4555US2022110934A1Pharmaceutical compositionSATO TAKASHI·Filed 2021·Application pending·0 cites
- 4649US8329374B2Carrier, production method thereof, developer and image forming methodINOUE RYOTA·Filed 2008·Granted Dec 11, 2012·0 cites·9 claims
- 4747US8329370B2Toner, image forming apparatus, image forming method, and process cartridgeNAKAYAMA SHINYA·Filed 2008·Granted Dec 11, 2012·0 cites·11 claims
- 4846US8691486B2Electrostatic image developing toner, developer, image forming apparatus, image forming method, and process cartridgeINOUE RYOTA·Filed 2010·Granted Apr 8, 2014·0 cites·17 claims
- 4945US7608373B2Toner for developing electrostatic latent image, developer using the toner, and process cartridge, image forming apparatus and image forming method using the developerRICOH KK·Filed 2006·Granted Oct 27, 2009·0 cites·20 claims
- 5044US8632932B2Toner, color toner set, developer, process cartridge, and image forming methodSABU AKIYOSHI·Filed 2009·Granted Jan 21, 2014·0 cites·18 claims
Showing the top 50 of 59 patent records by PatentIndex Score.
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