Inventor · disambiguated record
Koichi Sakata
Also filed as: SAKATA KOICHI
70 granted patents·21 pending applications·568 citations·filing 2001–2025
98Inventor score
Top patents by PatentIndex Score
91 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
- 0498US7261989B2Toner for developing electrostatic images, developer, image forming method, and image forming apparatusRICOH KK·Filed 2006·Granted Aug 28, 2007·49 cites·16 claims
- 0598US7258959B2Toner for electrophotography and image forming apparatusRICOH KK·Filed 2005·Granted Aug 21, 2007·42 cites·34 claims
- 0697US7169525B2Toner, developer, image forming apparatus, process cartridge and image forming processRICOH KK·Filed 2005·Granted Jan 30, 2007·37 cites·26 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
- 0894US8211610B2Carrier for use in developer developing electrostatic image, developer using the carrier, and image forming method and apparatus and process cartridge using the developerYAMAGUCHI KIMITOSHI·Filed 2010·Granted Jul 3, 2012·15 cites·12 claims
- 0994US7368213B2Toner and fixing device and image forming device using the sameRICOH KK·Filed 2005·Granted May 6, 2008·17 cites·19 claims
- 1091US7566521B2Toner, developer, toner container, process cartridge, image forming apparatus, and image forming methodRICOH KK·Filed 2007·Granted Jul 28, 2009·11 cites·16 claims
- 1191US7172844B2Toner 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
- 1290US8848408B2Discharge control device of electric power conversion systemSHINDO YUSUKE·Filed 2011·Granted Sep 30, 2014·14 cites·9 claims
- 1389US10103155B2Semiconductor memory deviceTOSHIBA MEMORY CORP·Filed 2017·Granted Oct 16, 2018·6 cites·21 claims
- 1487US9837434B2Semiconductor memory device and method for manufacturing sameTOSHIBA MEMORY CORP·Filed 2016·Granted Dec 5, 2017·4 cites·20 claims
- 1585US8045892B2Developing unit, process cartridge, and image forming method and apparatus incorporating an agitation compartmentRICOH CO LTD·Filed 2008·Granted Oct 25, 2011·8 cites·18 claims
- 1685US7962071B2Developing device and image forming apparatus using sameRICOH CO LTD·Filed 2008·Granted Jun 14, 2011·8 cites·19 claims
- 1785US7368212B2Toner 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
- 1883US9304427B2Carrier for developing an electrostatic latent image, developer and image forming apparatusIWATSUKI HITOSHI·Filed 2013·Granted Apr 5, 2016·3 cites·19 claims
- 1983US7288353B2Toner, developer, image developer and image forming apparatusRICOH KK·Filed 2004·Granted Oct 30, 2007·18 cites·17 claims
- 2082US8916325B2Carrier for developing electrostatic latent image, tow-component developer and image forming methodYAGUCHI SHIGENORI·Filed 2013·Granted Dec 23, 2014·3 cites·9 claims
- 2180US8475989B2Carrier, method for preparing the carrier, developer using the carrier, developer container, and image forming method and process cartridge using the developerTAKAHASHI YUTAKA·Filed 2010·Granted Jul 2, 2013·3 cites·15 claims
- 2279US9229347B2Carrier for two-component developer, two-component developer using the carrier, and process cartridge and image forming method and apparatus using the two component developerKISHIDA HIROYUKI·Filed 2013·Granted Jan 5, 2016·2 cites·8 claims
- 2379US8145101B2Developing device, image forming apparatus and process cartridge in which a shock is applied intermittently to the discharged developerTERAI JUNICHI·Filed 2008·Granted Mar 27, 2012·6 cites·12 claims
- 2477US9601984B2Power converterHAMANAKA YOSHIYUKI·Filed 2011·Granted Mar 21, 2017·5 cites·12 claims
- 2577US9261817B2Replenishing developer housing container and image forming apparatusRICOH CO LTD·Filed 2014·Granted Feb 16, 2016·2 cites·20 claims
- 2677US7890028B2Developing device and image forming apparatus comprising the sameRICOH CO LTD·Filed 2007·Granted Feb 15, 2011·5 cites·12 claims
- 2777US7749674B2Toner, developer, image developer and image forming apparatusRICOH KK·Filed 2007·Granted Jul 6, 2010·4 cites·13 claims
- 2876US9093920B2Discharge control apparatus for power converting system with capacitorHAMANAKA YOSHIYUKI·Filed 2011·Granted Jul 28, 2015·5 cites·8 claims
- 2976US8431312B2Carrier, developer, and image forming methodMASUDA MINORU·Filed 2009·Granted Apr 30, 2013·4 cites·13 claims
- 3075US9298119B2Carrier for two-component developer, two-component developer using the carrier, and image forming method and process cartridge using the two-component developerYAGUCHI SHIGENORI·Filed 2014·Granted Mar 29, 2016·2 cites·8 claims
- 3175US8652738B2Contact developing method, image forming apparatus, and process cartridgeYAMAGUCHI KIMITOSHI·Filed 2011·Granted Feb 18, 2014·2 cites·10 claims
- 3275US8518626B2Carrier, method for preparing the carrier, developer using the carrier, developer container, and image forming method and apparatus and process cartridge using the developerYAMADA SAORI·Filed 2011·Granted Aug 27, 2013·2 cites·18 claims
- 3375US8512929B2Latent electrostatic image developing carrier, two-component developer and image forming methodIWATSUKI HITOSHI·Filed 2010·Granted Aug 20, 2013·2 cites·20 claims
- 3474US9188878B2Driving system and driving method, exposure apparatus and exposure method, and driving system design methodFUJIMOTO HIROSHI·Filed 2012·Granted Nov 17, 2015·2 cites·36 claims
- 3570US11069700B2Semiconductor storage device and method of manufacturing the sameTOSHIBA MEMORY CORP·Filed 2019·Granted Jul 20, 2021·1 cites·11 claims
- 3670US8637218B2Carrier for developing electrostatic latent image and developerSAKATA KOICHI·Filed 2012·Granted Jan 28, 2014·1 cites·11 claims
- 3770US8142900B2Laser-weldable resin composition and molded productSAKATA KOICHI·Filed 2007·Granted Mar 27, 2012·5 cites·8 claims
- 3869US8918025B2Image forming method and image forming apparatusTOHMATSU HIROSHI·Filed 2012·Granted Dec 23, 2014·2 cites·8 claims
- 3969US8512928B2Carrier for developing electrostatic latent image, and two-component developer, supplemental developer, image forming apparatus, process cartridge, and image forming method using the carrierKISHIDA HIROYUKI·Filed 2011·Granted Aug 20, 2013·1 cites·18 claims
- 4068US8652735B2Carrier, developer, method of manufacturing carrier, developer container, image forming method, process cartridge, image forming apparatus, and supplemental developerSAKATA KOICHI·Filed 2011·Granted Feb 18, 2014·1 cites·14 claims
- 4167US9720335B2Driving system and driving method, and exposure apparatus and exposure methodNIKON CORP·Filed 2013·Granted Aug 1, 2017·2 cites·48 claims
- 4267US8481239B2Carrier for two-component developerNAKAJIMA HISASHI·Filed 2010·Granted Jul 9, 2013·1 cites·18 claims
- 4367US2025130510A1Vibration control of structural elements of exposure apparatusNIKON CORP·Filed 2024·Application pending·0 cites
- 4466US8825252B2Vehicle and control method thereforSAKATA KOICHI·Filed 2011·Granted Sep 2, 2014·4 cites·3 claims
- 4566US2023017218A1Semiconductor device and manufacturing method of semiconductor deviceKIOXIA CORP·Filed 2022·Application pending·0 cites
- 4665US12040733B2Encoder, driving apparatus, robot apparatus, control system, and its control methodNIKON CORP·Filed 2021·Granted Jul 16, 2024·0 cites·28 claims
- 4764US8829861B2Power converterHAMANAKA YOSHIYUKI·Filed 2011·Granted Sep 9, 2014·2 cites·15 claims
- 4864US7547497B2Toner, and developer, image developer and image forming apparatus using the tonerRICOH KK·Filed 2005·Granted Jun 16, 2009·2 cites·11 claims
- 4961US9260019B2Drive system and vehicle including drive systemSAKATA KOICHI·Filed 2014·Granted Feb 16, 2016·2 cites·15 claims
- 5061US2025278030A1Object holding device, exposure device, object moving method, and object holding systemNIKON CORP·Filed 2025·Application pending·0 cites
Showing the top 50 of 91 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →