Inventor · disambiguated record
Yasuaki Iwamoto
Also filed as: IWAMOTO YASUAKI
57 granted patents·7 pending applications·2,128 citations·filing 1988–2019
99Inventor score
Top patents by PatentIndex Score
64 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
- 0399US6468706B2Two-component developer, container filled with the two-component developer, and image formation apparatusRICOH KK·Filed 2001·Granted Oct 22, 2002·130 cites·20 claims
- 0499US6363229B1Full-color toner image fixing method and apparatusRICOH KK·Filed 2000·Granted Mar 26, 2002·174 cites·18 claims
- 0598US7261989B2Toner for developing electrostatic images, developer, image forming method, and image forming apparatusRICOH KK·Filed 2006·Granted Aug 28, 2007·49 cites·16 claims
- 0698US7258959B2Toner for electrophotography and image forming apparatusRICOH KK·Filed 2005·Granted Aug 21, 2007·42 cites·34 claims
- 0798US6667141B2Image forming method and apparatusRICOH KK·Filed 2002·Granted Dec 23, 2003·98 cites·19 claims
- 0897US7169525B2Toner, developer, image forming apparatus, process cartridge and image forming processRICOH KK·Filed 2005·Granted Jan 30, 2007·37 cites·26 claims
- 0997US5840456AColor toner comprising two binder resins of differing softening pointRICOH KK·Filed 1996·Granted Nov 24, 1998·125 cites·15 claims
- 1097US4980258ADry type developer for electrophotographyRICOH KK·Filed 1989·Granted Dec 25, 1990·78 cites·13 claims
- 1196US7521164B2Toner, and, developer, toner container, process cartridge, image forming apparatus and image forming methodRICOH KK·Filed 2008·Granted Apr 21, 2009·22 cites·7 claims
- 1296US7166403B2Toner, developer, image developing apparatus, and image forming apparatusRICOH KK·Filed 2005·Granted Jan 23, 2007·29 cites·21 claims
- 1396US6699632B2Image forming toner, and image forming method and image forming apparatus using the tonerRICOH KK·Filed 2001·Granted Mar 2, 2004·72 cites·20 claims
- 1496US6593048B2Two-component developer, and image forming apparatus and image forming method using the developerRICOH KK·Filed 2001·Granted Jul 15, 2003·97 cites·20 claims
- 1596US6544704B1Two-component developer, container filled with the two-component developer, and image formation apparatusRICOH KK·Filed 2002·Granted Apr 8, 2003·59 cites·20 claims
- 1696US6258502B1Two-component developer, two-component developer holding container, and electrophotographic image formation apparatus equipped with the containerRICOH KK·Filed 2000·Granted Jul 10, 2001·73 cites·13 claims
- 1796US5225303ADry-type toner including waxes release agent for electrophotographyRICOH KK·Filed 1991·Granted Jul 6, 1993·63 cites·11 claims
- 1895US6303257B1Electrophotographic toner and image forming method using the tonerRICOH KK·Filed 2000·Granted Oct 16, 2001·66 cites·8 claims
- 1994US6946229B2Toner for forming color image, image forming apparatus, and toner containerRICOH KK·Filed 2003·Granted Sep 20, 2005·54 cites·22 claims
- 2094US6811944B2Toner, method for manufacturing the toner, and image forming method and apparatus using the tonerRICOH KK·Filed 2004·Granted Nov 2, 2004·36 cites·4 claims
- 2193US7713672B2Image forming apparatus, image forming method and process cartridgeRICOH KK·Filed 2007·Granted May 11, 2010·15 cites·23 claims
- 2293US6183926B1Toner and two-component developer for electrophotographic process and image formation method and image formation apparatus using the tonerRICOH KK·Filed 1999·Granted Feb 6, 2001·73 cites·36 claims
- 2392US6790575B2Two-component developer, image forming apparatus, and image forming methodRICOH KK·Filed 2002·Granted Sep 14, 2004·43 cites·20 claims
- 2491US7718340B2Image forming apparatus, image forming method, and process cartridgeRICOH KK·Filed 2007·Granted May 18, 2010·12 cites·22 claims
- 2591US7566521B2Toner, developer, toner container, process cartridge, image forming apparatus, and image forming methodRICOH KK·Filed 2007·Granted Jul 28, 2009·11 cites·16 claims
- 2691US7172844B2Toner for electrophotography, and image forming process, process cartridge and image forming apparatus using the sameRICOH KK·Filed 2004·Granted Feb 6, 2007·36 cites·15 claims
- 2791US6835517B2Toner, developer and image forming method using the tonerRICOH KK·Filed 2002·Granted Dec 28, 2004·36 cites·23 claims
- 2891US6813461B2Toner, method for manufacturing the toner, and image forming method and apparatus using the tonerRICOH KK·Filed 2004·Granted Nov 2, 2004·26 cites·9 claims
- 2990US6911289B2Toner, method for manufacturing the toner, and image forming method and apparatus using the tonerRICOH KK·Filed 2001·Granted Jun 28, 2005·26 cites·19 claims
- 3090US4841331ATriboelectric charge application member for tonerRICOH KK·Filed 1988·Granted Jun 20, 1989·36 cites·11 claims
- 3189US6368765B2Method of producing toner for developing latent electrostatic imagesRICOH KK·Filed 2001·Granted Apr 9, 2002·40 cites·19 claims
- 3288US8835086B2Electrostatic image developing tonerWATANABE NAOHIRO·Filed 2010·Granted Sep 16, 2014·5 cites·20 claims
- 3388US7163773B2Toner for developing electrostatic image, developer, process for forming image, and image forming apparatusRICOH KK·Filed 2003·Granted Jan 16, 2007·27 cites·19 claims
- 3487US8084176B2Toner, developer, and image forming methodIWAMOTO YASUAKI·Filed 2009·Granted Dec 27, 2011·11 cites·5 claims
- 3587US8034526B2Method for manufacturing toner and tonerRICOH CO LTD·Filed 2007·Granted Oct 11, 2011·18 cites·27 claims
- 3687US6503681B2Process for the production of toner for developing electrostatic imageRICOH KK·Filed 2000·Granted Jan 7, 2003·34 cites·18 claims
- 3785US7368212B2Toner 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
- 3885US6856781B2Image forming apparatus and method of developing an electrostatic latent imageRICOH KK·Filed 2002·Granted Feb 15, 2005·25 cites·20 claims
- 3985US5514511AToner for developing latent electrostatic imagesRICOH KK·Filed 1994·Granted May 7, 1996·30 cites·4 claims
- 4084US7029816B2Electrographic image formation methodRICOH KK·Filed 2004·Granted Apr 18, 2006·20 cites·3 claims
- 4183US7288353B2Toner, developer, image developer and image forming apparatusRICOH KK·Filed 2004·Granted Oct 30, 2007·18 cites·17 claims
- 4281US7873304B2Image forming apparatus, image forming method, and process cartridgeRICOH CO LTD·Filed 2007·Granted Jan 18, 2011·6 cites·19 claims
- 4380US7405000B2Resin particle and process of producing the sameSANYO CHEMICAL IND LTD·Filed 2004·Granted Jul 29, 2008·18 cites·21 claims
- 4480US5314777ANegatively chargeable toner for developing latent electrostatic imagesRICOH KK·Filed 1993·Granted May 24, 1994·25 cites·11 claims
- 4580US4945022ATriboelectric charge application member for toner comprising copolymer of fluoro-olefin monomer and unsaturated silicon monomerRICOH KK·Filed 1989·Granted Jul 31, 1990·21 cites·22 claims
- 4679US8007974B2Toner, 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
- 4777US7749674B2Toner, developer, image developer and image forming apparatusRICOH KK·Filed 2007·Granted Jul 6, 2010·4 cites·13 claims
- 4877US7442484B2Image forming method using tonerRICOH KK·Filed 2004·Granted Oct 28, 2008·16 cites·13 claims
- 4976US7901861B2Electrophotographic image forming methodRICOH CO LTD·Filed 2007·Granted Mar 8, 2011·4 cites·11 claims
- 5075US7862973B2Toner and developer, and image forming apparatus, image forming method and process cartridgeRICOH CO LTD·Filed 2007·Granted Jan 4, 2011·4 cites·22 claims
Showing the top 50 of 64 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →