Inventor
UEMATSU ATSUSHI
JP19 patents
⚠️ This page may combine multiple inventors who share the name “UEMATSU ATSUSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
18 patentsUS9274442B2Mar 1, 2016
Electrophotographic image forming apparatus having charge transport layer with matrix-domain structure and charging member having concavity and protrusion
CANON KK31 citations94
US10025216B2Jul 17, 2018
Charging member with electro-conductive elastic layer having exposed bowl-shaped resin particles, process cartridge and electrophotographic apparatus
CANON KK8 citations84
US9448502B2Sep 20, 2016
Charging member, process cartridge and electrophotographic apparatus
CANON KK12 citations84
US9411307B2Aug 9, 2016
Process cartridge and electrophotographic apparatus
CANON KK10 citations84
US9075333B2Jul 7, 2015
Charging member, process cartridge, and electrophotographic apparatus
CANON KK13 citations84
US9599914B2Mar 21, 2017
Electrophotographic member having bow-shaped resin particles defining concavity and protrusion at surface thereof
CANON KK12 citations83
US9098006B2Aug 4, 2015
Roller member for electrophotography, process cartridge and electrophotographic apparatus
CANON KK13 citations83
US11619890B2Apr 4, 2023
Electro-conductive member, manufacturing method thereof, process cartridge, and electrophotographic image forming apparatus
CANON KK3 citations73
US9335650B2May 10, 2016
Image forming apparatus and process cartridge utilizing a porous charging member
CANON KK3 citations73
US9291936B2Mar 22, 2016
Image-forming apparatus with electro-conductive resin layer having resin particles and process cartridge
CANON KK5 citations73
US9678452B2Jun 13, 2017
Roller for electrophotography, process cartridge, and image-forming apparatus
CANON KK4 citations72
US11644761B2May 9, 2023
Electrophotographic roller, process cartridge and electrophotographic image forming apparatus
CANON KK4 citations71
US11835878B2Dec 5, 2023
Electrophotographic roller, process cartridge and electrophotographic image forming apparatus
CANON KK2 citations69
US10248042B2Apr 2, 2019
Electrophotographic roller, process cartridge and electrophotographic apparatus
CANON KK5 citations69
US12032331B2Jul 9, 2024
Electroconductive member, process cartridge, and electrophotographic image forming apparatus
CANON KK2 citations66
US9304429B2Apr 5, 2016
Charging member, process cartridge, and electrophotographic apparatus
CANON KK2 citations62
US12493251B2Dec 9, 2025
Electrophotographic member, process cartridge, and electrophotographic image forming apparatus
CANON KK0 citations52
US12498646B2Dec 16, 2025
Electrophotographic conductive member, process cartridge, and electrophotographic image forming apparatus
CANON KK0 citations51