Inventor · disambiguated record
Masayuki Hagi
Also filed as: HAGI MASAYUKI
49 granted patents·10 pending applications·523 citations·filing 1995–2012
98Inventor score
Top patents by PatentIndex Score
59 records- 0196US7556904B2Toner for electrostatic development, developer, image forming method, image-forming apparatus and process for cartridge using the sameRICOH KK·Filed 2006·Granted Jul 7, 2009·23 cites·17 claims
- 0295US7720428B2Toner recovery apparatus, process cartridge, and image forming apparatusRICOH KK·Filed 2008·Granted May 18, 2010·19 cites·13 claims
- 0395US7695885B2Developer and image forming method using the developerRICOH KK·Filed 2007·Granted Apr 13, 2010·18 cites·20 claims
- 0493US7749671B2Toner 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
- 0592US7820348B2Toner recovery apparatus, process cartridge, and image forming apparatusRICOH KK·Filed 2010·Granted Oct 26, 2010·6 cites·4 claims
- 0692US7556906B2Toner, and image forming method, image forming apparatus, and process cartridge using the tonerRICOH KK·Filed 2006·Granted Jul 7, 2009·13 cites·19 claims
- 0791US6338929B1Toner for developing an electrostatic latent imageMINOLTA CO LTD·Filed 2000·Granted Jan 15, 2002·41 cites·20 claims
- 0890US7587159B2Image forming method and apparatus including a relationship between secondary roller diameter and recording medium ingress positionRICOH KK·Filed 2007·Granted Sep 8, 2009·11 cites·20 claims
- 0989US7838193B2Toner and image forming method using the tonerRICOH CO LTD·Filed 2007·Granted Nov 23, 2010·10 cites·20 claims
- 1089US7632619B2Toner, fixing method and image forming method using the tonerRICOH KK·Filed 2006·Granted Dec 15, 2009·10 cites·13 claims
- 1188US7727694B2Toner 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
- 1286US5776646ANegatively chargeable toner with specified fine particles added externallyMINOLTA CO LTD·Filed 1997·Granted Jul 7, 1998·38 cites·20 claims
- 1384US7817946B2Developing device, image developing method, image forming apparatus, image forming method, and process cartridgeRICOH KK·Filed 2007·Granted Oct 19, 2010·7 cites·12 claims
- 1483US6541173B1Color toner for developing electrostatic image comprising two kinds of polyesters and two kinds of releasing agentsMINOLTA CO LTD·Filed 2000·Granted Apr 1, 2003·22 cites·26 claims
- 1582US7833686B2Toner 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
- 1679US6335135B1Toner for developing electrostatic latent imageMINOLTA CO LTD·Filed 2000·Granted Jan 1, 2002·18 cites·18 claims
- 1777US5759731AToner for electrophotography with specified fine particles added externallyMINOLTA CO LTD·Filed 1997·Granted Jun 2, 1998·24 cites·20 claims
- 1877US5747211AToner for developing electrostatic latent imagesMINOLTA CO LTD·Filed 1997·Granted May 5, 1998·25 cites·23 claims
- 1975US8021814B2Toner, and oilless fixing method and process cartridge using the tonerRICOH CO LTD·Filed 2008·Granted Sep 20, 2011·4 cites·19 claims
- 2075US7873300B2Single component development device, process cartridge and tonerRICOH CO LTD·Filed 2008·Granted Jan 18, 2011·4 cites·10 claims
- 2175US6777151B2Negatively chargeable toner and image-forming methodMINOLTA CO LTD·Filed 2002·Granted Aug 17, 2004·14 cites·20 claims
- 2275US5976750AElectrostatic latent image-developing toner containing specified toner particles and specified external additivesMINOLTA CO LTD·Filed 1998·Granted Nov 2, 1999·24 cites·16 claims
- 2375US5707769AYellow toner and magenta toner and image forming apparatus and method using sameMINOLTA CO LTD·Filed 1995·Granted Jan 13, 1998·27 cites·31 claims
- 2471US8486597B2Toner, and method for producing the sameYAMAMOTO ATSUSHI·Filed 2011·Granted Jul 16, 2013·1 cites·19 claims
- 2571US6506530B1Color toner for developing electrostatic image, comprising first linear polyester and second non-linear polyester as binder resinMINOLTA CO LTD·Filed 2000·Granted Jan 14, 2003·12 cites·20 claims
- 2666US7217488B2Toner comprising core layer and shell layerKONICA MINOLTA BUSINESS TECH·Filed 2004·Granted May 15, 2007·9 cites·17 claims
- 2765US7867680B2Non-magnetic toner for one-component development and method of preparing the toner, and image developer, image forming apparatus, process cartridge and image forming methodRICOH CO LTD·Filed 2009·Granted Jan 11, 2011·2 cites·17 claims
- 2865US6503679B2Color toner for developing an electrostatic imageMINOLTA CO LTD·Filed 2001·Granted Jan 7, 2003·9 cites·19 claims
- 2965US6352808B1Electrostatic-latent-image developing toner and inorganic particles used for such a tonerMINOLTA CO LTD·Filed 2000·Granted Mar 5, 2002·9 cites·20 claims
- 3063US6344302B1Developer for developing electrostatic latent imagesMINOLTA CO LTD·Filed 1996·Granted Feb 5, 2002·16 cites·17 claims
- 3162US8103199B2Developing device, and image forming method and process cartridge using the developing deviceYASUNAGA HIDEAKI·Filed 2008·Granted Jan 24, 2012·2 cites·15 claims
- 3262US7970323B2Developing device, developer therefor, and image forming method and apparatus, and process cartridge using the developing deviceRICOH CO LTD·Filed 2008·Granted Jun 28, 2011·2 cites·15 claims
- 3358US8043779B2Pulverized tonerRICOH CO LTD·Filed 2007·Granted Oct 25, 2011·1 cites·10 claims
- 3458US8041270B2Image developer using one-component developerRICOH CO LTD·Filed 2008·Granted Oct 18, 2011·1 cites·7 claims
- 3557US5759728ABlack toner for developing electrostatic latent images with carbon black dispersed in specific distributionMINOLTA CO LTD·Filed 1997·Granted Jun 2, 1998·12 cites·20 claims
- 3656US8053154B2Toner and image forming methodRICOH CO LTD·Filed 2007·Granted Nov 8, 2011·1 cites·12 claims
- 3756US7981593B2Toner, developer including the toner, and image forming method and apparatus using the tonerRICOH CO LTD·Filed 2007·Granted Jul 19, 2011·1 cites·10 claims
- 3856US6709798B2Full color image forming methodMINOLTA CO LTD·Filed 2001·Granted Mar 23, 2004·6 cites·23 claims
- 3953US8329371B2Toner for non-magnetic one-component developer, method of preparing the toner, developer and image forming methodMIKURIYA YOSHIHIRO·Filed 2007·Granted Dec 11, 2012·1 cites·18 claims
- 4052US8440380B2Toner and method for producing the sameYAMAMOTO ATSUSHI·Filed 2010·Granted May 14, 2013·0 cites·11 claims
- 4152US5879848AToner for full color developingMINOLTA CO LTD·Filed 1996·Granted Mar 9, 1999·10 cites·23 claims
- 4251US8192910B2Image forming method, image forming apparatus and process cartridgeKATOH HIROAKI·Filed 2009·Granted Jun 5, 2012·1 cites·8 claims
- 4350US6335134B1Toner for an electrostatic latent image developmentMINOLTA CO LTD·Filed 2000·Granted Jan 1, 2002·4 cites·20 claims
- 4448US5840458ADeveloper for developing an electrostatic latent image to which laminated titanium oxide is externally addedMINOLTA CO LTD·Filed 1996·Granted Nov 24, 1998·13 cites·34 claims
- 4548US5794105AImage forming apparatus and toner for full color developmentMINOLTA CO LTD·Filed 1996·Granted Aug 11, 1998·8 cites·47 claims
- 4647US6482561B1Toner used for developing electrostatic latent imageMINOLTA CO LTD·Filed 2000·Granted Nov 19, 2002·3 cites·22 claims
- 4745US8007973B2Full-color toner kit, process cartridge, and image forming methodRICOH CO LTD·Filed 2007·Granted Aug 30, 2011·0 cites·14 claims
- 4844US6132920AToner for developing electrostatic latent imageMINOLTA CO LTD·Filed 1999·Granted Oct 17, 2000·6 cites·28 claims
- 4941US6194116B1Toner containing specific alkyl carboxylic acid with fine particles externally addedMINOLTA CO LTD·Filed 1999·Granted Feb 27, 2001·5 cites·20 claims
- 5040US2009117481A1Toner for one-component developerYASUNAGA HIDEAKI·Filed 2008·Application pending·0 cites
Showing the top 50 of 59 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →