Inventor · disambiguated record
Naoki Matsumaru
Also filed as: MATSUMARU NAOKI
34 granted patents·6 pending applications·424 citations·filing 2003–2025
97Inventor score
Top patents by PatentIndex Score
40 records- 0198US11703794B2Cartridge and image forming apparatusCANON KK·Filed 2022·Granted Jul 18, 2023·4 cites·29 claims
- 0298US9052638B2Cartridge and image forming apparatus with seal member for sealing a toner feeding openingCANON KK·Filed 2013·Granted Jun 9, 2015·43 cites·16 claims
- 0398US7203442B2Image forming apparatus, unit mountable thereto and separating memberCANON KK·Filed 2005·Granted Apr 10, 2007·53 cites·12 claims
- 0498US6963706B2Process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2003·Granted Nov 8, 2005·144 cites·10 claims
- 0597US12072664B2Cartridge and image forming apparatusCANON KK·Filed 2023·Granted Aug 27, 2024·2 cites·30 claims
- 0697US10901366B2Image forming apparatus and cartridgeCANON KK·Filed 2020·Granted Jan 26, 2021·5 cites·7 claims
- 0796US10678184B2Image forming apparatus and cartridgeCANON KK·Filed 2018·Granted Jun 9, 2020·11 cites·25 claims
- 0896US10627780B2Cartridge and image forming apparatusCANON KK·Filed 2019·Granted Apr 21, 2020·9 cites·10 claims
- 0995US9417604B2Image forming apparatusCANON KK·Filed 2015·Granted Aug 16, 2016·11 cites·12 claims
- 1095US8238784B2Process cartridge remanufacturing methodKUSUDO RYOJI·Filed 2008·Granted Aug 7, 2012·35 cites·13 claims
- 1194US8311449B2Process cartridge, supporting member, process cartridge assembling method, and process cartridge disassembling methodKUSUDO RYOJI·Filed 2007·Granted Nov 13, 2012·26 cites·47 claims
- 1292US10962927B2Cartridge and imaging forming apparatusCANON KK·Filed 2019·Granted Mar 30, 2021·5 cites·9 claims
- 1391US11449001B2Cartridge and image forming apparatusCANON KK·Filed 2021·Granted Sep 20, 2022·2 cites·6 claims
- 1489US9904208B2Accommodating container, cleaning device, developing device, process cartridge, and image forming apparatusCANON KK·Filed 2016·Granted Feb 27, 2018·3 cites·20 claims
- 1588US7062195B2Toner seal member, and process cartridgeCANON KK·Filed 2004·Granted Jun 13, 2006·34 cites·6 claims
- 1684US9823603B2Feeding device, cleaning device, developing device, process cartridge, and image forming apparatusCANON KK·Filed 2016·Granted Nov 21, 2017·2 cites·25 claims
- 1783US9250567B2Developer container for detecting developer amount based on capacitance, developing apparatus, process cartridge, and image forming apparatusCANON KK·Filed 2014·Granted Feb 2, 2016·2 cites·17 claims
- 1876US2025147461A1Cartridge and image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 1976US2025306528A1Developing apparatus and cartridgeCANON KK·Filed 2025·Application pending·0 cites
- 2076US2025306530A1Process cartridge and developing cartridgeCANON KK·Filed 2025·Application pending·0 cites
- 2175US10073380B2Feeding deviceCANON KK·Filed 2016·Granted Sep 11, 2018·1 cites·21 claims
- 2274US2025306502A1Developer containerCANON KK·Filed 2025·Application pending·0 cites
- 2373USD508074SImage forming apparatusCANON KK·Filed 2003·Granted Aug 2, 2005·18 cites·1 claims
- 2472US9244428B2Photosensitive cartridge and image forming apparatusCANON KK·Filed 2015·Granted Jan 26, 2016·1 cites·16 claims
- 2571US2025306505A1Developing device and developer container manufacturing methodCANON KK·Filed 2025·Application pending·0 cites
- 2670US12429811B2Cartridge and image forming apparatusCANON KK·Filed 2020·Granted Sep 30, 2025·0 cites·105 claims
- 2770US10802419B2Method of manufacturing developer container, developer container, developing apparatus, process cartridge, and image forming apparatusCANON KK·Filed 2018·Granted Oct 13, 2020·0 cites·24 claims
- 2866US8583005B2Process cartridge and image forming apparatusASANUMA NAOYA·Filed 2011·Granted Nov 12, 2013·1 cites·11 claims
- 2959USD873341SProcess cartridge for image forming apparatusCANON KK·Filed 2018·Granted Jan 21, 2020·7 cites·1 claims
- 3057US9568860B2Developer container, development device, process cartridge, and image forming apparatusCANON KK·Filed 2014·Granted Feb 14, 2017·0 cites·36 claims
- 3155US10564597B2Method for manufacturing image bearing unit and method for manufacturing cartridgeCANON KK·Filed 2019·Granted Feb 18, 2020·0 cites·10 claims
- 3254US6915091B2Developing apparatusCANON KK·Filed 2003·Granted Jul 5, 2005·5 cites·8 claims
- 3351US9989888B2Method of manufacturing developer containerCANON KK·Filed 2015·Granted Jun 5, 2018·0 cites·23 claims
- 3450US10520883B2Method for manufacturing image bearing unit and method for manufacturing cartridgeCANON KK·Filed 2019·Granted Dec 31, 2019·0 cites·16 claims
- 3550US10322580B2Frame, cartridge, image forming apparatus, and method for manufacturing frameCANON KK·Filed 2017·Granted Jun 18, 2019·0 cites·12 claims
- 3649US11016411B2Process cartridge, developing apparatus, and image forming apparatusCANON KK·Filed 2020·Granted May 25, 2021·0 cites·14 claims
- 3748US11782383B2Process cartridgeCANON KK·Filed 2022·Granted Oct 10, 2023·0 cites·9 claims
- 3848US10649394B2Method of manufacturing frame unit, method of manufacturing image carrying unit, method of manufacturing cartridge, and cartridgeCANON KK·Filed 2019·Granted May 12, 2020·0 cites·26 claims
- 3943US10345756B2Developing apparatus having a sealed developer bearing member, process cartridge, and image forming apparatusCANON KK·Filed 2017·Granted Jul 9, 2019·0 cites·14 claims
- 4034US2004028429A1Development apparatus and process cartridge using the sameCANON KK·Filed 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →