Inventor · disambiguated record
Akihisa Matsukawa
Also filed as: MATSUKAWA AKIHISA
19 granted patents·10 pending applications·25 citations·filing 2011–2025
90Inventor score
Top patents by PatentIndex Score
29 records- 0192US9971298B2Image forming apparatus, process cartridge, developing cartridge, and drum cartridgeCANON KK·Filed 2017·Granted May 15, 2018·7 cites·21 claims
- 0290US10209668B2Image forming apparatus, process cartridge, developing cartridge, and drum cartridgeCANON KK·Filed 2018·Granted Feb 19, 2019·4 cites·19 claims
- 0387US9465322B2Cartridge and image forming apparatusCANON KK·Filed 2015·Granted Oct 11, 2016·3 cites·43 claims
- 0487US9442454B2Image forming apparatus having an image bearing member charged with predetermined polarity and potentialCANON KK·Filed 2015·Granted Sep 13, 2016·3 cites·17 claims
- 0581US9904202B2Image forming apparatus having potential difference controlCANON KK·Filed 2016·Granted Feb 27, 2018·2 cites·13 claims
- 0681US9835973B2Image forming apparatus having cleaner-less developer systemCANON KK·Filed 2016·Granted Dec 5, 2017·2 cites·5 claims
- 0777US2025328090A1Image forming apparatus and process cartridgeCANON KK·Filed 2025·Application pending·0 cites
- 0876US9727002B2Image forming apparatus having an image bearing member charged with predetermined polarity and potentialCANON KK·Filed 2016·Granted Aug 8, 2017·1 cites·9 claims
- 0975US9977368B2Developing apparatus, process cartridge, and image forming apparatusCANON KK·Filed 2017·Granted May 22, 2018·1 cites·22 claims
- 1072US12485414B2Microchannel deviceCANON KK·Filed 2022·Granted Dec 2, 2025·0 cites·13 claims
- 1170US11829087B2Image forming apparatus with image bearing members having different surface layer thicknessesCANON KK·Filed 2022·Granted Nov 28, 2023·0 cites·10 claims
- 1269US9429868B2Image forming apparatusCANON KK·Filed 2015·Granted Aug 30, 2016·1 cites·15 claims
- 1369US2025067700A1Microanalytical chipCANON KK·Filed 2024·Application pending·0 cites
- 1467US2024238780A1Micro-analysis chipCANON KK·Filed 2024·Application pending·0 cites
- 1566US11526103B2Image forming apparatus capable of suppressing image defect due to foreign matterCANON KK·Filed 2021·Granted Dec 13, 2022·0 cites·10 claims
- 1666US2025052714A1Microchannel deviceCANON KK·Filed 2024·Application pending·0 cites
- 1766US2023390765A1Microchannel device and method for producing thereofCANON KK·Filed 2023·Application pending·0 cites
- 1864US2025303408A1Micro-analysis chip, electrolyte concentration measuring system, and electrolyte concentration measuring methodCANON KK·Filed 2024·Application pending·0 cites
- 1964US2024238785A1Microanalysis chipCANON KK·Filed 2024·Application pending·0 cites
- 2062US11970390B2Method for producing microchannel deviceCANON KK·Filed 2022·Granted Apr 30, 2024·0 cites·11 claims
- 2159US12147170B2Image forming apparatus having toner chargingCANON KK·Filed 2020·Granted Nov 19, 2024·0 cites·64 claims
- 2259US2023390764A1Microchannel device and manufacturing method thereofCANON KK·Filed 2023·Application pending·0 cites
- 2358US8565624B2Image forming apparatus and process cartridgeMATSUKAWA AKIHISA·Filed 2011·Granted Oct 22, 2013·1 cites·6 claims
- 2453US9239546B2Developing unit and process cartridgeCANON KK·Filed 2013·Granted Jan 19, 2016·0 cites·20 claims
- 2550US12346037B2Image forming apparatusCANON KK·Filed 2024·Granted Jul 1, 2025·0 cites·20 claims
- 2650US10620568B2Developing device having magnetic field generating members, image forming apparatus and cartridgeCANON KK·Filed 2019·Granted Apr 14, 2020·0 cites·20 claims
- 2748US9910405B2Developing device, process cartridge, and image forming apparatusCANON KK·Filed 2016·Granted Mar 6, 2018·0 cites·14 claims
- 2845US2015125166A1Developer container, developing apparatus, process cartridge and image forming apparatusCANON KK·Filed 2014·Application pending·0 cites
- 2943US2014186062A1Developer container unit, developing unit, and process cartridgeCANON KK·Filed 2013·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →