Inventor · disambiguated record
Kyohta Koetsuka
Also filed as: KOETSUKA KYOHTA
28 granted patents·5 pending applications·141 citations·filing 2000–2016
95Inventor score
Top patents by PatentIndex Score
33 records- 0190US7925192B2Developing roller, developing device, process cartridge, and image forming apparatusRICOH CO LTD·Filed 2008·Granted Apr 12, 2011·13 cites·16 claims
- 0286US8331834B2Developing unit, image forming apparatus incorporating same, and process cartridge including sameKOETSUKA KYOHTA·Filed 2009·Granted Dec 11, 2012·13 cites·23 claims
- 0385US6330415B1Developing device and magnet roller for developing deviceRICOH KK·Filed 2000·Granted Dec 11, 2001·25 cites·17 claims
- 0484US8535116B2Magnetic particle carrying device, and developing unit, process cartridge, and image forming apparatus using the same, and surface treatment method of the sameABE HIROYA·Filed 2011·Granted Sep 17, 2013·3 cites·8 claims
- 0582US8565652B2Development roller, development device, process cartridge and image-forming apparatusTERASAKA TAKUMI·Filed 2012·Granted Oct 22, 2013·5 cites·9 claims
- 0680US8023867B2Magnet roller and method for the same, magnetic particle-support member, development device, process cartridge, and image forming apparatusRICOH CO LTD·Filed 2008·Granted Sep 20, 2011·6 cites·17 claims
- 0779US7027761B2Developing device and an image forming apparatus including the sameRICOH KK·Filed 2004·Granted Apr 11, 2006·17 cites·21 claims
- 0873US7890030B2Magnetic roller, developer carrier, developing device, process cartridge, and image forming apparatusRICOH CO LTD·Filed 2009·Granted Feb 15, 2011·4 cites·6 claims
- 0970US8731444B2Develop roller, develop unit, process cartridge, and image forming apparatusOHSAWA MASAYUKI·Filed 2011·Granted May 20, 2014·2 cites·11 claims
- 1069US7891094B2Method of manufacturing a hollow body used in an image forming apparatusRICOH CO LTD·Filed 2009·Granted Feb 22, 2011·4 cites·1 claims
- 1169US7664441B2Developer holding member, development device, process cartridge, image forming apparatus and method of manufacturing hollow bodyRICOH KK·Filed 2007·Granted Feb 16, 2010·4 cites·13 claims
- 1268US8135316B2Development roller, development device, process cartridge and image forming deviceKOJIMA TOSHIO·Filed 2009·Granted Mar 13, 2012·3 cites·17 claims
- 1365US7366454B2Long magnet, production method thereof, magnet roller and image forming deviceRICOH KK·Filed 2004·Granted Apr 29, 2008·8 cites·38 claims
- 1462US7917067B2Magnetic field generating member and manufacturing method thereof, magnetic particle support body, image development device, process cartridge and image forming apparatusRICOH CO LTD·Filed 2008·Granted Mar 29, 2011·2 cites·16 claims
- 1562US7352983B2Development magnet roller, development device, process cartridge and image forming apparatusRICOH KK·Filed 2004·Granted Apr 1, 2008·8 cites·52 claims
- 1659US7127199B2Developing device and process cartridge with predetermined magnetic force for an image forming apparatusRICOH KK·Filed 2003·Granted Oct 24, 2006·8 cites·60 claims
- 1758US8824932B2Development device, and process cartridge and image forming apparatus incorporating sameMASUDA KATSUMI·Filed 2011·Granted Sep 2, 2014·1 cites·6 claims
- 1858US7899374B2Magnetic particle carrying device, and developing unit, process cartridge, and image forming apparatus using the same, and surface treatment method of the sameRICOH CO LTD·Filed 2008·Granted Mar 1, 2011·1 cites·7 claims
- 1957US7203450B2Developing roller, developing apparatus, process cartridge, and image formation apparatusRICOH KK·Filed 2004·Granted Apr 10, 2007·6 cites·16 claims
- 2056US8500615B2Magnetic roller and manufacturing method thereof, developer carrier, development device, processing cartridge, and image forming apparatusIMAMURA TSUYOSHI·Filed 2008·Granted Aug 6, 2013·2 cites·14 claims
- 2153US7189338B2Image forming apparatus and developing device thereforRICOH KK·Filed 2003·Granted Mar 13, 2007·5 cites·11 claims
- 2250US8135315B2Developer regulating member in a developing unit, process cartridge including same, and image forming apparatus incorporating sameOZEKI TAKAMASA·Filed 2009·Granted Mar 13, 2012·1 cites·20 claims
- 2349US7907876B2Developer carrier, development device, process cartridge, and image forming apparatusRICOH CO LTD·Filed 2009·Granted Mar 15, 2011·0 cites·9 claims
- 2447US10105814B2Polishing sheet, polishing tool and polishing methodSAWADA KIYOTAKA·Filed 2016·Granted Oct 23, 2018·0 cites·8 claims
- 2547US8175501B2Development roller including a development sleeve, surface treatment device that treats an outer surface of the development sleeve and wire member that roughens the outer surface of the development sleeveKAMIYA NORIYUKI·Filed 2011·Granted May 8, 2012·0 cites·9 claims
- 2645US7572388B2Magnet compound material to be compression molded, a molded elongate magnetic, a magnet roller, a developing agent-carrying body, a developing apparatus and an image-forming apparatusRICOH KK·Filed 2006·Granted Aug 11, 2009·0 cites·9 claims
- 2740US2007059047A1Development roller, surface treatment device and wire memberKAMIYA NORIYUKI·Filed 2006·Application pending·0 cites
- 2840US2008232865A1Magnet roller, developing agent carrier, developing unit, process cartridge and image forming apparatus using sameTERASHIMA MIEKO·Filed 2008·Application pending·0 cites
- 2939US8600271B2Magnet roller, developer holder element, develop unit, process cartridge, and image forming apparatusINNAMI TAKASHI·Filed 2011·Granted Dec 3, 2013·0 cites·6 claims
- 3038US8682230B2Development device, process cartridge, and image forming apparatus including same having multiple recesses formed on a developer bearerTAGUCHI NOBUYUKI·Filed 2011·Granted Mar 25, 2014·0 cites·14 claims
- 3138US2007127952A1Development device, process cartridge and image forming apparatusTERASHIMA MIEKO·Filed 2006·Application pending·0 cites
- 3235US2008226355A1Development device, process cartridge, and image formation apparatusKOETSUKA KYOHTA·Filed 2008·Application pending·0 cites
- 3334US2009154961A1Develop unit, process cartridge, and image formation apparatusKAMIYA NORIYUKI·Filed 2008·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →