Inventor · disambiguated record
Shuichi Gofuku
Also filed as: GOFUKU SHUICHI
36 granted patents·6 pending applications·97 citations·filing 2011–2025
96Inventor score
Technology areasG03G
Top patents by PatentIndex Score
42 records- 0197US8682200B2Process cartridge and image forming apparatusCHADANI KAZUO·Filed 2011·Granted Mar 25, 2014·26 cites·19 claims
- 0296US10691063B2Process cartridge and image forming apparatusCANON KK·Filed 2018·Granted Jun 23, 2020·9 cites·20 claims
- 0395US9696684B2Process cartridge and image forming apparatusCANON KK·Filed 2016·Granted Jul 4, 2017·7 cites·2 claims
- 0495US9063501B2Developer accommodating unit with light guide member for detecting remaining toner amountCANON KK·Filed 2013·Granted Jun 23, 2015·19 cites·16 claims
- 0592US10732545B2Cartridge remanufacturing method and cartridgeCANON KK·Filed 2019·Granted Aug 4, 2020·7 cites·25 claims
- 0689US12292711B2Process cartridge and image forming apparatusCANON KK·Filed 2024·Granted May 6, 2025·0 cites·30 claims
- 0788US12174582B2Process cartridge and image forming apparatusCANON KK·Filed 2024·Granted Dec 24, 2024·0 cites·16 claims
- 0884US12130581B2Process cartridge and image forming apparatusCANON KK·Filed 2023·Granted Oct 29, 2024·0 cites·53 claims
- 0983US10101688B2Gear unit, developing device, and manufacturing method thereforCANON KK·Filed 2016·Granted Oct 16, 2018·2 cites·24 claims
- 1083US9785086B2Developer container, developing device, process cartridge, and image forming apparatusCANON KK·Filed 2016·Granted Oct 10, 2017·2 cites·19 claims
- 1181US9519264B2Process cartridge and image forming apparatusCANON KK·Filed 2015·Granted Dec 13, 2016·2 cites·6 claims
- 1280US11237498B2Image forming apparatus including a movement mechanism for moving a toner container that is replaceableCANON KK·Filed 2020·Granted Feb 1, 2022·1 cites·15 claims
- 1379US11687029B2Process cartridge and image forming apparatusCANON KK·Filed 2021·Granted Jun 27, 2023·0 cites·53 claims
- 1478US9063507B2Development device, process cartridge, and image forming apparatusCANON KK·Filed 2013·Granted Jun 23, 2015·2 cites·11 claims
- 1577US12222674B2Cartridge, toner cartridge, and image forming apparatusCANON KK·Filed 2023·Granted Feb 11, 2025·0 cites·60 claims
- 1675US11320782B2Process cartridge and image forming apparatusCANON KK·Filed 2020·Granted May 3, 2022·0 cites·14 claims
- 1775US11314201B2Process cartridge and image forming apparatusCANON KK·Filed 2020·Granted Apr 26, 2022·0 cites·18 claims
- 1874US2025284225A1Developing apparatus and image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 1974US2025138475A1Cartridge, toner cartridge, and image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 2073US2024094660A1Developer storage device and image forming apparatusCANON KK·Filed 2023·Application pending·0 cites
- 2172US11971682B2Cartridge and image forming apparatusCANON KK·Filed 2023·Granted Apr 30, 2024·0 cites·17 claims
- 2272US9058018B2Process cartridge and image forming apparatusCANON KK·Filed 2013·Granted Jun 16, 2015·1 cites·15 claims
- 2371US9964921B2Process cartridge and image forming apparatusCANON KK·Filed 2017·Granted May 8, 2018·0 cites·9 claims
- 2470US9310713B2Developer container, developing device, process cartridge, and image forming apparatusCANON KK·Filed 2015·Granted Apr 12, 2016·1 cites·25 claims
- 2569US11841646B2Developer storage device and image forming apparatus to determine service life or replacement time of the developer storage deviceCANON KK·Filed 2022·Granted Dec 12, 2023·0 cites·12 claims
- 2669US9239544B2Development apparatus, process cartridge, and image forming apparatusCANON KK·Filed 2013·Granted Jan 19, 2016·1 cites·38 claims
- 2767US11650538B2Cartridge and image forming apparatusCANON KK·Filed 2022·Granted May 16, 2023·0 cites·51 claims
- 2860US8666281B2Process cartridge and developing deviceUEDA KAORI·Filed 2011·Granted Mar 4, 2014·1 cites·10 claims
- 2957US2025110423A1Toner cartridge, developing cartridge, image forming apparatus and toner discharging memberCANON KK·Filed 2024·Application pending·0 cites
- 3056US2025123589A1Cartridge and image forming apparatusCANON KK·Filed 2024·Application pending·0 cites
- 3156US2025208536A1Image forming apparatusCANON KK·Filed 2024·Application pending·0 cites
- 3255US9785087B2Developer container, developing apparatus, process cartridge, and image forming apparatusCANON KK·Filed 2016·Granted Oct 10, 2017·0 cites·32 claims
- 3353US9658591B2Cleaning apparatus, process cartridge, and image forming apparatusCANON KK·Filed 2016·Granted May 23, 2017·0 cites·10 claims
- 3452USD788213SProcess cartridge for image forming apparatusCANON KK·Filed 2015·Granted May 30, 2017·6 cites·1 claims
- 3552US9164476B2Toner cartridge having structure for minimizing deformation when grippedCHADANI KAZUO·Filed 2012·Granted Oct 20, 2015·0 cites·21 claims
- 3651US12050423B2Drive mechanism and image forming apparatusCANON KK·Filed 2022·Granted Jul 30, 2024·0 cites·11 claims
- 3747US9046814B2Developing device, process cartridge, and image forming apparatusCANON KK·Filed 2013·Granted Jun 2, 2015·0 cites·26 claims
- 3845USD789446SProcess cartridge for image forming apparatusCANON KK·Filed 2015·Granted Jun 13, 2017·4 cites·1 claims
- 3944US10372062B2Developing apparatus and process cartridgeCANON KK·Filed 2018·Granted Aug 6, 2019·0 cites·18 claims
- 4043US10670986B2Developing apparatus and image forming apparatusCANON KK·Filed 2018·Granted Jun 2, 2020·0 cites·9 claims
- 4141USD790005SProcess cartridge for image forming apparatusCANON KK·Filed 2015·Granted Jun 20, 2017·3 cites·1 claims
- 4241USD790004SProcess cartridge for image forming apparatusCANON KK·Filed 2015·Granted Jun 20, 2017·3 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →