Inventor · disambiguated record
Shunji Katoh
Also filed as: KATOH SHUNJI
46 granted patents·1 pending application·1,234 citations·filing 1980–2022
98Inventor score
Top patents by PatentIndex Score
47 records- 0199US6522855B1Image forming apparatus and developing apparatus preventing uneven image densityRICOH KK·Filed 2000·Granted Feb 18, 2003·161 cites·38 claims
- 0299US6337957B1Image forming apparatus and developing device with improved self toner density controlRICOH KK·Filed 2000·Granted Jan 8, 2002·191 cites·76 claims
- 0398US6198895B1Developing device with improved developer circulation and toner density controlRICOH KK·Filed 2000·Granted Mar 6, 2001·133 cites·29 claims
- 0496US9465317B2Nozzle insertion member, powder container, and image forming apparatusKIKUCHI KENJI·Filed 2014·Granted Oct 11, 2016·12 cites·27 claims
- 0596US7599650B2Developer bearing member, developing device, process cartridge and image forming apparatusRICOH KK·Filed 2006·Granted Oct 6, 2009·25 cites·54 claims
- 0695US6859634B2Toner refilling device and developing device using the same for an image forming apparatusRICOH KK·Filed 2003·Granted Feb 22, 2005·65 cites·3 claims
- 0795US6091912ATower supplying device and image forming apparatus using same toner supplying deviceRICOH KK·Filed 1999·Granted Jul 18, 2000·104 cites·18 claims
- 0894US5950062AToner sorting device for separating reusable toner from used toner and image forming apparatus using the same deviceRICOH KK·Filed 1998·Granted Sep 7, 1999·84 cites·66 claims
- 0993US6151471AToner supplying device, method and image forming apparatus using the same toner supplying device or methodRICOH KK·Filed 1999·Granted Nov 21, 2000·69 cites·53 claims
- 1093US5950055APowder pump and image forming apparatus having the powder pump and method thereforRICOH KK·Filed 1998·Granted Sep 7, 1999·95 cites·24 claims
- 1193US4922301ARotary multicolor developing apparatusRICOH KK·Filed 1989·Granted May 1, 1990·52 cites·17 claims
- 1291US11803134B2Powder containerRICOH CO LTD·Filed 2022·Granted Oct 31, 2023·1 cites·32 claims
- 1390US9423720B2Powder container and image forming apparatusHOSOKAWA HIROSHI·Filed 2014·Granted Aug 23, 2016·5 cites·18 claims
- 1490US4885223AMethod and apparatus for developing electrostatic latent imageRICOH KK·Filed 1987·Granted Dec 5, 1989·35 cites·21 claims
- 1589US6097903AToner supplying device, toner container therefor and image forming apparatus using same toner supplying device and toner containerRICOH KK·Filed 1998·Granted Aug 1, 2000·53 cites·92 claims
- 1688US10670990B2Nozzle insertion member, powder container, and image forming apparatusRICOH CO LTD·Filed 2019·Granted Jun 2, 2020·1 cites·20 claims
- 1788US9513576B2Powder containerKIKUCHI KENJI·Filed 2015·Granted Dec 6, 2016·2 cites·31 claims
- 1888US9069288B2Toner housing container and image forming apparatusKOJIMA SATOSHI·Filed 2014·Granted Jun 30, 2015·5 cites·16 claims
- 1988US9057984B2Powder container, toner cartridge, drawer tray, and image forming apparatusYOSHIDA KEIICHI·Filed 2012·Granted Jun 16, 2015·5 cites·17 claims
- 2088US8781375B2Powder container, powder conveying apparatus, and image forming apparatusYOSHIDA KEIICHI·Filed 2011·Granted Jul 15, 2014·5 cites·17 claims
- 2188US5182601AImage forming apparatus having toner handling units which are alternatively usable as a developing device or a cleaning deviceRICOH KK·Filed 1991·Granted Jan 26, 1993·38 cites·3 claims
- 2287US10401760B2Nozzle insertion member, powder container, and image forming apparatusRICOH CO LTD·Filed 2018·Granted Sep 3, 2019·1 cites·9 claims
- 2387US9507291B2Magnetic permeability detector, developing device, image forming apparatus, and oscillation signal frequency calculation method thereforHIROTA TETSURO·Filed 2015·Granted Nov 29, 2016·2 cites·24 claims
- 2486US10048621B2Nozzle insertion member, powder container, and image forming apparatusKIKUCHI KENJI·Filed 2017·Granted Aug 14, 2018·1 cites·13 claims
- 2586US9152084B2Toner housing container and image forming apparatusSHIBA MASANA·Filed 2014·Granted Oct 6, 2015·5 cites·16 claims
- 2685US10908532B2Nozzle insertion member, powder container, and image forming apparatusRICOH CO LTD·Filed 2020·Granted Feb 2, 2021·1 cites·20 claims
- 2783US9857729B2Nozzle insertion member, powder container, and image forming apparatusKIKUCHI KENJI·Filed 2016·Granted Jan 2, 2018·1 cites·27 claims
- 2882US9348259B2Toner housing container and image forming apparatusRICOH CO LTD·Filed 2014·Granted May 24, 2016·3 cites·12 claims
- 2981US4733267AApparatus for developing electrostatic latent imageRICOH KK·Filed 1987·Granted Mar 22, 1988·23 cites·5 claims
- 3080US9170233B2Magnetic permeability detector, developing device, image forming apparatus, and oscillation signal frequency calculation method thereforHIROTA TETSURO·Filed 2014·Granted Oct 27, 2015·2 cites·26 claims
- 3177US9261817B2Replenishing developer housing container and image forming apparatusRICOH CO LTD·Filed 2014·Granted Feb 16, 2016·2 cites·20 claims
- 3277US4987449AMethod of sensing a remaining amount of developer for a color image forming apparatusRICOH KK·Filed 1989·Granted Jan 22, 1991·19 cites·7 claims
- 3376US11543761B2Powder container including an opening and a shutter with a front end including a surface with lower frictionRICOH CO LTD·Filed 2021·Granted Jan 3, 2023·0 cites·22 claims
- 3476US9141031B2Toner housing container and image forming apparatusYAMABE JUNJI·Filed 2014·Granted Sep 22, 2015·2 cites·16 claims
- 3572US11372347B2Powder containerRICOH CO LTD·Filed 2020·Granted Jun 28, 2022·0 cites·31 claims
- 3672US10935905B2Powder containerRICOH CO LTD·Filed 2020·Granted Mar 2, 2021·0 cites·20 claims
- 3769US10809648B2Powder containerRICOH CO LTD·Filed 2019·Granted Oct 20, 2020·0 cites·20 claims
- 3868US5227847AImage forming equipment with supplemental developer detecting deviceRICOH KK·Filed 1991·Granted Jul 13, 1993·18 cites·5 claims
- 3965US10534290B2Powder containerRICOH CO LTD·Filed 2016·Granted Jan 14, 2020·0 cites·14 claims
- 4063US4384785ACharge quenching apparatus for electrophotographic copying machineRICOH KK·Filed 1980·Granted May 24, 1983·13 cites·4 claims
- 4162US9507290B2Magnetic permeability detector, developing device, image forming apparatus, and oscillation signal frequency calculation method thereforHIROTA TETSURO·Filed 2015·Granted Nov 29, 2016·0 cites·19 claims
- 4249US10031441B2Developing device, and image forming apparatus and process cartridge incorporating sameKATOH SAYURI·Filed 2016·Granted Jul 24, 2018·0 cites·18 claims
- 4349US8849163B2Powder conveying apparatus, image forming apparatus, and powder containerIKEGUCHI HIROSHI·Filed 2012·Granted Sep 30, 2014·0 cites·5 claims
- 4442US8953986B2Powder container, powder conveying apparatus, and image forming apparatusYOSHIDA KEIICHI·Filed 2011·Granted Feb 10, 2015·0 cites·19 claims
- 4541US10088776B2Developing device, and image forming apparatus and process cartridge incorporating sameRICOH CO LTD·Filed 2016·Granted Oct 2, 2018·0 cites·18 claims
- 4637US9864297B2Developing device and image forming apparatus and process cartridge incorporating sameOHHIRA TATSUYA·Filed 2016·Granted Jan 9, 2018·0 cites·12 claims
- 4731US2017160675A1Developing device, process cartridge, and image forming apparatus incorporating sameKATOH SAYURI·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →