Inventor · disambiguated record
Keigo Nakajima
Also filed as: NAKAJIMA KEIGO
33 granted patents·1 pending application·27 citations·filing 2008–2024
94Inventor score
Top patents by PatentIndex Score
34 records- 0190US10739698B2Developing cartridge including casing and first and second agitators for agitating toner accommodated in casingBROTHER IND LTD·Filed 2019·Granted Aug 11, 2020·2 cites·21 claims
- 0288US12498650B2Developing cartridge including casing and first and second agitators for agitating toner accommodated in casingBROTHER IND LTD·Filed 2024·Granted Dec 16, 2025·0 cites·21 claims
- 0388US8229318B2Image forming device having a detachable process unit supporting fluid communication between developer cartridgesNAKAJIMA KEIGO·Filed 2009·Granted Jul 24, 2012·9 cites·13 claims
- 0485US10031467B2Cleaning roller provided with shaft and elastic body wound thereaboutBROTHER IND LTD·Filed 2017·Granted Jul 24, 2018·2 cites·21 claims
- 0582US8588644B2Developing deviceNAKAJIMA KEIGO·Filed 2011·Granted Nov 19, 2013·3 cites·11 claims
- 0680US12147171B2Developing cartridge including casing and first and second agitators for agitating toner accommodated in casingBROTHER IND LTD·Filed 2022·Granted Nov 19, 2024·0 cites·19 claims
- 0779US12050428B2Image forming apparatus requesting execution of density correction processBROTHER IND LTD·Filed 2023·Granted Jul 30, 2024·0 cites·8 claims
- 0876US11537062B2Developing cartridge including casing and first and second agitators for agitating toner accommodated in casingBROTHER IND LTD·Filed 2021·Granted Dec 27, 2022·0 cites·16 claims
- 0976US9989914B2Cleaning roller and cleaning deviceBROTHER IND LTD·Filed 2017·Granted Jun 5, 2018·1 cites·15 claims
- 1075US10684584B1Development deviceBROTHER IND LTD·Filed 2019·Granted Jun 16, 2020·1 cites·19 claims
- 1174US11675304B2Image forming apparatus requesting execution of density correction processBROTHER IND LTD·Filed 2022·Granted Jun 13, 2023·0 cites·12 claims
- 1274US9014592B2Developing device having seal members to restrict toner leakageFUKAMACHI YASUO·Filed 2013·Granted Apr 21, 2015·2 cites·23 claims
- 1373US11143981B2Developing cartridge including casing and first and second agitators for agitating toner accommodated in casingBROTHER IND LTD·Filed 2021·Granted Oct 12, 2021·0 cites·16 claims
- 1473US8855524B2Developing apparatus, process cartridge and image forming apparatusNAKAJIMA KEIGO·Filed 2011·Granted Oct 7, 2014·2 cites·9 claims
- 1572US10901340B2Developing cartridge including casing and first and second agitators for agitating toner accommodated in casingBROTHER IND LTD·Filed 2020·Granted Jan 26, 2021·0 cites·21 claims
- 1669US8306445B2Image forming apparatus, image forming system, container for developing agent, and method of manufacturing container for developing agentSUZUKI SATORU·Filed 2010·Granted Nov 6, 2012·3 cites·9 claims
- 1768US11372359B2Image forming apparatus requesting execution of density correction processBROTHER IND LTD·Filed 2020·Granted Jun 28, 2022·0 cites·11 claims
- 1865US7829840B2Developing unit, process cartridge, and image forming deviceBROTHER IND LTD·Filed 2008·Granted Nov 9, 2010·2 cites·19 claims
- 1964US10248072B2Cleaning roller provided with shaft and elastic body wound thereaboutBROTHER IND LTD·Filed 2018·Granted Apr 2, 2019·0 cites·21 claims
- 2061US8903267B2Developing deviceBROTHER IND LTD·Filed 2013·Granted Dec 2, 2014·0 cites·10 claims
- 2158US11415912B2Developing cartridge including agitator configured to contact peripheral surface of supply rollerBROTHER IND LTD·Filed 2021·Granted Aug 16, 2022·0 cites·15 claims
- 2257US12271126B2Image forming apparatus configured to perform cleaning operation for cleaning drum cleaning roller configured to collect toner on photosensitive drumBROTHER IND LTD·Filed 2023·Granted Apr 8, 2025·0 cites·14 claims
- 2356US8725033B2Image forming device having detachable process unitNAKAJIMA KEIGO·Filed 2012·Granted May 13, 2014·0 cites·18 claims
- 2455US11537061B2Image forming apparatus, and control method for the sameBROTHER IND LTD·Filed 2021·Granted Dec 27, 2022·0 cites·13 claims
- 2552US11720049B2Developing cartridge including first cam rotatable with first gear and second cam rotatable with second gear to separate developing roller from photosensitive drumBROTHER IND LTD·Filed 2022·Granted Aug 8, 2023·0 cites·17 claims
- 2651US10274862B2Image forming apparatus including drum cartridgeBROTHER IND LTD·Filed 2018·Granted Apr 30, 2019·0 cites·17 claims
- 2747US11061357B2Image forming apparatus with rotation-controllable photosensitive drum and movable developing rollerBROTHER IND LTD·Filed 2019·Granted Jul 13, 2021·0 cites·6 claims
- 2846US10452023B2Image forming apparatus and drum cartridgeBROTHER IND LTD·Filed 2018·Granted Oct 22, 2019·0 cites·19 claims
- 2946US8290379B2Image forming device and detachable process unitNAKAJIMA KEIGO·Filed 2010·Granted Oct 16, 2012·0 cites·23 claims
- 3045US10890858B2Development deviceBROTHER IND LTD·Filed 2019·Granted Jan 12, 2021·0 cites·11 claims
- 3145US9020390B2Developing device having seal members to restrict toner leakageFUKAMACHI YASUO·Filed 2013·Granted Apr 28, 2015·0 cites·12 claims
- 3240US10386784B2Image forming apparatus including handle cover configured to cover handle of drum cartridgeBROTHER IND LTD·Filed 2018·Granted Aug 20, 2019·0 cites·11 claims
- 3340US8320780B2Image forming device and detachable process unitNAKAJIMA KEIGO·Filed 2010·Granted Nov 27, 2012·0 cites·12 claims
- 3430US2023167755A1Engine valve and manufacturing method thereforFUJI VALVE·Filed 2020·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →