Inventor · disambiguated record
Hitoshi Iwatsuki
Also filed as: IWATSUKI HITOSHI
54 granted patents·18 pending applications·288 citations·filing 2004–2022
98Inventor score
Top patents by PatentIndex Score
72 records- 0199US7318989B2Toner, developer, toner container, process cartridge, image forming apparatus, and image forming methodRICOH KK·Filed 2006·Granted Jan 15, 2008·71 cites·14 claims
- 0297US11926931B2Resin powder for solid freeform fabrication, device for solid freeform fabrication object, and method of manufacturing solid freeform fabrication objectRICOH CO LTD·Filed 2021·Granted Mar 12, 2024·2 cites·19 claims
- 0396US10030154B2Powder material for three-dimensional modeling, material set for 3D modeling, method of manufacturing three-dimensional object, device for manufacturing three-dimensional object, and three-dimensional objectNARUSE MITSURU·Filed 2016·Granted Jul 24, 2018·7 cites·17 claims
- 0496US9782935B2Powder material for three-dimensional modeling, kit for three-dimensional modeling, device for manufacturing three-dimensional object, and method of manufacturing three-dimensional objectYAMASHITA YASUYUKI·Filed 2016·Granted Oct 10, 2017·7 cites·9 claims
- 0596US9708502B2Powder for 3D modeling, set for 3D modeling, method of manufacturing 3D object, and device for manufacturing 3D objectNARUSE MITSURU·Filed 2015·Granted Jul 18, 2017·13 cites·11 claims
- 0695US10682808B2Three-dimensional object fabrication method, fabrication apparatus, and fabrication systemFUJITA TAKASHI·Filed 2018·Granted Jun 16, 2020·17 cites·20 claims
- 0795US7592116B2Indium-containing carrier for electrophotography, developer using the same, and developer containerRICOH KK·Filed 2005·Granted Sep 22, 2009·19 cites·16 claims
- 0895US7527908B2Carrier, developer, developer container, image forming method and process cartridgeRICOH KK·Filed 2006·Granted May 5, 2009·19 cites·16 claims
- 0994US11066758B2Resin powder having pillar shape and specific circularity for solid freeform fabrication, device for solid freeform fabrication object, and method of manufacturing solid freeform fabrication objectSAITO AKIRA·Filed 2017·Granted Jul 20, 2021·4 cites·17 claims
- 1094US8211610B2Carrier 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
- 1194US7381513B2Carrier, developer, image forming method and process cartridge for electrostatic image developmentRICOH KK·Filed 2005·Granted Jun 3, 2008·26 cites·16 claims
- 1293US9873228B2Powder material for three dimensional modeling, kit for three dimensional modeling, green body for three dimensional modeling, method of manufacturing three dimensional object, method of manufacturing three-dimensional green body, device for manufacturing three-dimensional object, and device for manufacturing three-dimensional green bodySUZUKI YASUO·Filed 2016·Granted Jan 23, 2018·5 cites·13 claims
- 1392US11491713B2Resin powder for solid freeform fabrication, device for solid freeform fabrication object, and method of manufacturing solid freeform fabrication objectRICOH CO LTD·Filed 2017·Granted Nov 8, 2022·3 cites·11 claims
- 1492US7553598B2Electrophotographic carrier, developer, developer container, process cartridge, image forming apparatus and image forming methodRICOH KK·Filed 2006·Granted Jun 30, 2009·17 cites·18 claims
- 1591US7566521B2Toner, developer, toner container, process cartridge, image forming apparatus, and image forming methodRICOH KK·Filed 2007·Granted Jul 28, 2009·11 cites·16 claims
- 1686US11052649B2Resin powder for solid freeform fabrication, device for fabricating solid freeform fabrication object, and resin powderSAITO AKIRA·Filed 2018·Granted Jul 6, 2021·1 cites·20 claims
- 1783US9304427B2Carrier for developing an electrostatic latent image, developer and image forming apparatusIWATSUKI HITOSHI·Filed 2013·Granted Apr 5, 2016·3 cites·19 claims
- 1882US8916325B2Carrier for developing electrostatic latent image, tow-component developer and image forming methodYAGUCHI SHIGENORI·Filed 2013·Granted Dec 23, 2014·3 cites·9 claims
- 1982US8663892B2Latent electrostatic image developing carrier, process cartridge and image forming apparatusYAGUCHI SHIGENORI·Filed 2012·Granted Mar 4, 2014·3 cites·13 claims
- 2080US8475989B2Carrier, 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
- 2179US9229347B2Carrier 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
- 2278US12208571B2Resin powder for solid freeform fabrication, device for solid freeform fabrication object, and method of manufacturing solid freeform fabrication objectRICOH CO LTD·Filed 2021·Granted Jan 28, 2025·0 cites·6 claims
- 2377US9261817B2Replenishing developer housing container and image forming apparatusRICOH CO LTD·Filed 2014·Granted Feb 16, 2016·2 cites·20 claims
- 2477US8086143B2Image forming apparatus for use with carrier including a core and cover layerNAGAYAMA MASASHI·Filed 2008·Granted Dec 27, 2011·5 cites·20 claims
- 2577US7745084B2Toner, developer including the toner, and image forming method, image forming apparatus and process cartridge using the tonerRICOH KK·Filed 2005·Granted Jun 29, 2010·5 cites·20 claims
- 2676US8431312B2Carrier, developer, and image forming methodMASUDA MINORU·Filed 2009·Granted Apr 30, 2013·4 cites·13 claims
- 2775US9298119B2Carrier 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
- 2875US8652738B2Contact developing method, image forming apparatus, and process cartridgeYAMAGUCHI KIMITOSHI·Filed 2011·Granted Feb 18, 2014·2 cites·10 claims
- 2975US8518626B2Carrier, 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
- 3075US8512929B2Latent electrostatic image developing carrier, two-component developer and image forming methodIWATSUKI HITOSHI·Filed 2010·Granted Aug 20, 2013·2 cites·20 claims
- 3173US2021283895A1Resin powder for solid freeform fabrication, device for fabricating solid freeform fabrication object, and resin powderSAITO AKIRA·Filed 2021·Application pending·0 cites
- 3271US10800096B2Resin powder for solid freeform fabrication and device for solid freeform fabrication objectIIDA SOHICHIROH·Filed 2018·Granted Oct 13, 2020·1 cites·14 claims
- 3371US2022176625A1Method of manufacturing solid freeform fabrication object and device for manufacturing solid freeform fabrication objectRICOH CO LTD·Filed 2022·Application pending·0 cites
- 3470US11590685B2Fiber aggregation, short fiber and method of manufacturing the same, and film and method of manufacturing the sameRICOH CO LTD·Filed 2019·Granted Feb 28, 2023·0 cites·20 claims
- 3569US8918025B2Image forming method and image forming apparatusTOHMATSU HIROSHI·Filed 2012·Granted Dec 23, 2014·2 cites·8 claims
- 3669US8512928B2Carrier 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
- 3769US2021402680A1Resin powder for solid freeform fabrication and device for solid freeform fabrication objectRICOH CO LTD·Filed 2021·Application pending·0 cites
- 3868US8652735B2Carrier, 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
- 3967US8481239B2Carrier for two-component developerNAKAJIMA HISASHI·Filed 2010·Granted Jul 9, 2013·1 cites·18 claims
- 4066US11458676B2Resin powder and method of manufacturing solid freeform fabrication objectRICOH CO LTD·Filed 2019·Granted Oct 4, 2022·0 cites·7 claims
- 4165US8026032B2Carrier, supplemental developer, developer in image developer, developer feeding apparatus, image forming apparatus and process cartridgeRICOH CO LTD·Filed 2007·Granted Sep 27, 2011·2 cites·24 claims
- 4264US11241825B2Resin powder, device for solid freeform fabrication object, and method of manufacturing solid freeform fabrication objectRICOH CO LTD·Filed 2019·Granted Feb 8, 2022·0 cites·16 claims
- 4362US11504883B2Resin particle producing methodRICOH CO LTD·Filed 2018·Granted Nov 22, 2022·0 cites·19 claims
- 4462US11045978B2Particle for solid freeform fabrication, powder for solid freeform fabrication, device for manufacturing solid freeform fabrication object, method of manufacturing solid freeform fabrication object, and particleIWATSUKI HITOSHI·Filed 2018·Granted Jun 29, 2021·0 cites·20 claims
- 4562US2018147780A1Method of manufacturing solid freeform fabrication object and device for manufacturing solid freeform fabrication objectKAMODA Kiichi·Filed 2017·Application pending·0 cites
- 4661US11472958B2Powder for solid freeform fabrication and method of manufacturing solid freeform fabrication objectRICOH CO LTD·Filed 2019·Granted Oct 18, 2022·0 cites·5 claims
- 4761US2018264720A1Resin powder for solid freeform fabrication and device for solid freeform fabrication objectTAMOTO NOZOMU·Filed 2018·Application pending·0 cites
- 4860US2021291438A1Resin powder and resin powder for producing three-dimensional object, and three-dimensional object producing method and three-dimensional object producing apparatusIWATSUKI HITOSHI·Filed 2021·Application pending·0 cites
- 4956US10233110B2Material set for manufacturing glass object, liquid material for manufacturing glass object, method of manufacturing glass object, glass object, and device for manufacturing glass objectYAMAGUCHI TAKEO·Filed 2016·Granted Mar 19, 2019·0 cites·13 claims
- 5055US9519234B2Carrier, two-component developer, supplemental developer, image forming method, process cartridge and image forming apparatusKISHIDA HIROYUKI·Filed 2013·Granted Dec 13, 2016·0 cites·13 claims
Showing the top 50 of 72 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →