Inventor
MURAKAMI RYUTA
JP55 patents
⚠️ This page may combine multiple inventors who share the name “MURAKAMI RYUTA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
49 patentsUS9989892B2Jun 5, 2018
Developer accommodating container with projected shaped portion for contacting toner seal member
CANON KK42 citations98
US9523942B2Dec 20, 2016
Developer accommodating container, developing cartridge, process cartridge and image forming apparatus
CANON KK61 citations98
US9465318B2Oct 11, 2016
Developer accommodating container with toner seal member, unsealing member, and auxiliary unsealing member
CANON KK63 citations98
US7024131B2Apr 4, 2006
Process cartridge assembling method, process cartridge remanufacturing method, and connecting member
CANON KK121 citations98
US6735405B2May 11, 2004
Method of remanufacturing process cartridge and developing device
CANON KK76 citations98
US6898392B2May 24, 2005
Process cartridge and electrophotographic image forming apparatus
CANON KK64 citations96
US6836639B2Dec 28, 2004
Cleaning apparatus having a cleaning member, a cleaning frame, and a connecting portion connecting both end surfaces of the frame
CANON KK58 citations96
US10095161B2Oct 9, 2018
Accommodating container, process cartridge and electrophotographic image forming apparatus
CANON KK26 citations94
US9599932B2Mar 21, 2017
Developer container with sealing member having a plurality of holes and rotatable member having a plurality of projections contactable with the sealing member
CANON KK43 citations94
US9229371B2Jan 5, 2016
Developer container, developing cartridge, process cartridge and image forming apparatus
CANON KK41 citations94
US9188906B2Nov 17, 2015
Cartridge, developing cartridge, process cartridge and image forming apparatus
CANON KK50 citations94
US9164430B2Oct 20, 2015
Developer container, developing cartridge, process cartridge and image forming apparatus
CANON KK48 citations94
US9116466B2Aug 25, 2015
Cartridge, process cartridge and image forming apparatus
CANON KK42 citations94
US9069289B2Jun 30, 2015
Developer container, developing cartridge, process cartridge and image forming apparatus
CANON KK44 citations94
US9052638B2Jun 9, 2015
Cartridge and image forming apparatus with seal member for sealing a toner feeding opening
CANON KK43 citations94
USD622309SAug 24, 2010
Process cartridge
CANON KK19 citations93
USD583860SDec 30, 2008
Toner cartridge
CANON KK19 citations93
US7206534B2Apr 17, 2007
Process cartridge, developing cartridge and gripping part therefor
CANON KK39 citations93
US7156797B2Jan 2, 2007
Assembling method for developing roller
CANON KK49 citations93
US6987938B2Jan 17, 2006
Process cartridge and image forming apparatus
CANON KK34 citations93
US11703794B2Jul 18, 2023
Cartridge and image forming apparatus
CANON KK4 citations86
US10678184B2Jun 9, 2020
Image forming apparatus and cartridge
CANON KK11 citations86
US11169483B2Nov 9, 2021
Process cartridge and electrophotographic image forming apparatus
CANON KK6 citations84
US10901366B2Jan 26, 2021
Image forming apparatus and cartridge
CANON KK5 citations84
US10788788B2Sep 29, 2020
Electrophotographic image forming apparatus having a driving-force transmission member featuring first and second helical gear portions with opposing twist directions
CANON KK5 citations84
US10627780B2Apr 21, 2020
Cartridge and image forming apparatus
CANON KK9 citations84
USD873341SJan 21, 2020
Process cartridge for image forming apparatus
CANON KK7 citations84
USD622308SAug 24, 2010
Process cartridge
CANON KK15 citations84
USD585482SJan 27, 2009
Toner cartridge
CANON KK10 citations84
US10962927B2Mar 30, 2021
Cartridge and imaging forming apparatus
CANON KK5 citations82
US11927910B2Mar 12, 2024
Cartridge and image forming apparatus
CANON KK3 citations75
US12072664B2Aug 27, 2024
Cartridge and image forming apparatus
CANON KK2 citations73
US11720055B2Aug 8, 2023
Process cartridge and electrophotographic image forming apparatus
CANON KK1 citations73
US11402798B2Aug 2, 2022
Process cartridge and electrophotographic image forming apparatus
CANON KK2 citations73
US11392081B2Jul 19, 2022
Process cartridge and electrophotographic image forming apparatus
CANON KK2 citations73
US10303116B2May 28, 2019
Electrophotographic image forming apparatus having a driving-force transmission member featuring first and second helical gear portions with opposing twist directions
CANON KK3 citations73
US9904208B2Feb 27, 2018
Accommodating container, cleaning device, developing device, process cartridge, and image forming apparatus
CANON KK3 citations73
US9823603B2Nov 21, 2017
Feeding device, cleaning device, developing device, process cartridge, and image forming apparatus
CANON KK2 citations73
US11449001B2Sep 20, 2022
Cartridge and image forming apparatus
CANON KK2 citations71
US12287600B2Apr 29, 2025
Drum unit, drive transmission unit, cartridge and electrophotographic image forming apparatus
CANON KK0 citations63
US12025941B2Jul 2, 2024
Drum unit, drive transmission unit, cartridge and electrophotographic image forming apparatus
CANON KK0 citations63
US11774905B2Oct 3, 2023
Electrophotographic image forming apparatus
CANON KK0 citations63
US7519311B2Apr 14, 2009
Developing apparatus, process cartridge, image forming apparatus, and assemblying method for developing apparatus
CANON KK6 citations63
US12019392B2Jun 25, 2024
Process cartridge and electrophotographic image forming apparatus
CANON KK0 citations62
US11803153B2Oct 31, 2023
Process cartridge and electrophotographic image forming apparatus
CANON KK0 citations62
US12429811B2Sep 30, 2025
Cartridge and image forming apparatus
CANON KK0 citations61
US10222736B2Mar 5, 2019
Image forming apparatus
CANON KK0 citations52
US10073380B2Sep 11, 2018
Feeding device
CANON KK1 citations52
US9618873B2Apr 11, 2017
Image forming apparatus
CANON KK1 citations52
MURAKAMI RYUTA
1 patentShowing the top 50 of 55 patents by PatentIndex Score.