Inventor · disambiguated record
Hisashi Nakajima
Also filed as: NAKAJIMA HISASHI
63 granted patents·12 pending applications·1,381 citations·filing 1988–2024
99Inventor score
Top patents by PatentIndex Score
75 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
- 0696US7521164B2Toner, and, developer, toner container, process cartridge, image forming apparatus and image forming methodRICOH KK·Filed 2008·Granted Apr 21, 2009·22 cites·7 claims
- 0796US5804983AProbe apparatus with tilt correction mechanismsTOKYO ELECTRON LTD·Filed 1997·Granted Sep 8, 1998·212 cites·6 claims
- 0895US8728696B2Toner, image forming method, and process cartridgeYAMADA SAORI·Filed 2012·Granted May 20, 2014·23 cites·16 claims
- 0995US6779672B2Synthetic resin container closureCROWN CORK JAPAN·Filed 2001·Granted Aug 24, 2004·70 cites·20 claims
- 1094US7368213B2Toner and fixing device and image forming device using the sameRICOH KK·Filed 2005·Granted May 6, 2008·17 cites·19 claims
- 1194US7014055B2Synthetic resin container closureCROWN CORK JAPAN·Filed 2003·Granted Mar 21, 2006·64 cites·5 claims
- 1294US5642056AProbe apparatus for correcting the probe card posture before testingTOKYO ELECTRON LTD·Filed 1994·Granted Jun 24, 1997·182 cites·12 claims
- 1391US7566521B2Toner, developer, toner container, process cartridge, image forming apparatus, and image forming methodRICOH KK·Filed 2007·Granted Jul 28, 2009·11 cites·16 claims
- 1490USD875842SAccessory for spinning top toyTOMY CO LTD·Filed 2018·Granted Feb 18, 2020·35 cites·1 claims
- 1587USD875841SAccessory for spinning top toyTOMY CO LTD·Filed 2018·Granted Feb 18, 2020·27 cites·1 claims
- 1687US9182694B2Toner, image forming apparatus, image forming method, and process cartridgeRICOH CO LTD·Filed 2013·Granted Nov 10, 2015·4 cites·20 claims
- 1787US8741529B2Image forming method, image forming apparatus, and process cartridgeAOKI MITSUO·Filed 2012·Granted Jun 3, 2014·5 cites·6 claims
- 1885US10459360B2Toner and image forming methodSUZUKI NAMIE·Filed 2018·Granted Oct 29, 2019·3 cites·11 claims
- 1985US7368212B2Toner 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
- 2084US7608377B2Image forming method and image forming apparatusRICOH KK·Filed 2006·Granted Oct 27, 2009·7 cites·15 claims
- 2182US9348259B2Toner housing container and image forming apparatusRICOH CO LTD·Filed 2014·Granted May 24, 2016·3 cites·12 claims
- 2282US5635226AComposite molding device for stretch blow moldingA K TECH LAB INC·Filed 1995·Granted Jun 3, 1997·49 cites·7 claims
- 2381US7939235B2Image formation methodRICOH CO LTD·Filed 2008·Granted May 10, 2011·6 cites·3 claims
- 2480US8475989B2Carrier, 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
- 2579US10274856B2Toner for electrophotography, image forming method, and process cartridgeNAKAJIMA HISASHI·Filed 2015·Granted Apr 30, 2019·2 cites·7 claims
- 2679US5679306AMethod of molding preform in injection stretch blow moldingA K TECH LAB INC·Filed 1994·Granted Oct 21, 1997·40 cites·11 claims
- 2777US9128398B2Toner for forming electrophotographic image, method for manufacturing toner for forming electrophotographic image, image forming method, and process cartridgeNAGAYAMA MASASHI·Filed 2012·Granted Sep 8, 2015·2 cites·20 claims
- 2877US7442484B2Image forming method using tonerRICOH KK·Filed 2004·Granted Oct 28, 2008·16 cites·13 claims
- 2976US11256188B2Toner, toner stored unit, and image forming apparatusRICOH CO LTD·Filed 2018·Granted Feb 22, 2022·1 cites·8 claims
- 3076US10599059B2Toner, image forming apparatus, image forming method, and toner storage unitSUZUKI NAMIE·Filed 2019·Granted Mar 24, 2020·1 cites·7 claims
- 3176US8167161B2Metallic container closure having internal pressure release functionICHIMURA KATSUHITO·Filed 2006·Granted May 1, 2012·10 cites·5 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
- 3375US6247836B1Injection screw for injection molding a preform of a polyester resinA K TECH LAB INC·Filed 2000·Granted Jun 19, 2001·10 cites·4 claims
- 3474US5489853ATesting apparatus and connection method for the testing apparatusTOKYO ELECTRON LTD·Filed 1994·Granted Feb 6, 1996·30 cites·11 claims
- 3572US9482971B2White toner, and image forming method and image forming apparatus using the white tonerSUZUKI KAZUMI·Filed 2015·Granted Nov 1, 2016·1 cites·20 claims
- 3670US10578988B2Toner, image forming apparatus, and toner stored unitYAMAUCHI YOSHITAKA·Filed 2016·Granted Mar 3, 2020·1 cites·12 claims
- 3770US8211605B2Toner, developer, toner container, process cartridge, image forming method, and image forming apparatusYAMADA HIROSHI·Filed 2008·Granted Jul 3, 2012·3 cites·15 claims
- 3869US5597525AMethod for injection molding polyethylene terephthalateA K TECH LAB INC·Filed 1994·Granted Jan 28, 1997·28 cites·11 claims
- 3968US9005862B2Toner, image forming method, and process cartridgeNAGAYAMA MASASHI·Filed 2013·Granted Apr 14, 2015·1 cites·17 claims
- 4067US8481239B2Carrier for two-component developerNAKAJIMA HISASHI·Filed 2010·Granted Jul 9, 2013·1 cites·18 claims
- 4166US9012117B2Toner, developer, toner container, process cartridge, image forming method, and image forming apparatusNAKAJIMA HISASHI·Filed 2010·Granted Apr 21, 2015·1 cites·19 claims
- 4264US7547497B2Toner, and developer, image developer and image forming apparatus using the tonerRICOH KK·Filed 2005·Granted Jun 16, 2009·2 cites·11 claims
- 4364US6060210AVarnishing film and method of adjusting the surface gloss of prepress color proof using the sameJUJO PAPER CO LTD·Filed 1997·Granted May 9, 2000·26 cites·8 claims
- 4464US5681520AMethod of molding large containers by the process of stretch blow moldingA K TECH LAB INC·Filed 1995·Granted Oct 28, 1997·24 cites·4 claims
- 4563US5506512ATransfer apparatus having an elevator and prober using the sameTOKYO ELECTRON LTD·Filed 1994·Granted Apr 9, 1996·40 cites·20 claims
- 4662US11287757B2Toner, toner stored container, developer, developing device, process cartridge, and image forming apparatusRICOH CO LTD·Filed 2020·Granted Mar 29, 2022·0 cites·17 claims
- 4762US8546055B2Toner and developerNAKAYAMA SHINYA·Filed 2009·Granted Oct 1, 2013·2 cites·20 claims
- 4861US5620650AMethod for injection stretch blow molding of polyethyleneA K TECH LAB INC·Filed 1994·Granted Apr 15, 1997·21 cites·10 claims
- 4961US4875005AMechanism for turning over a test head of a wafer probing machineTOKYO ELECTRON LTD·Filed 1988·Granted Oct 17, 1989·25 cites·16 claims
- 5060US8833590B2Metallic container closure having internal pressure release functionICHIMURA KATSUHITO·Filed 2011·Granted Sep 16, 2014·1 cites·19 claims
Showing the top 50 of 75 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →