P

Inventor

KIKUCHI YUICHI

JP46 patents
⚠️ This page may combine multiple inventors who share the name “KIKUCHI YUICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CANON KK

36 patents
US10678154B2Jun 9, 2020

Electrophotographic electroconductive member, process cartridge, and electrophotographic image forming apparatus

CANON KK24 citations94
US10678158B2Jun 9, 2020

Electro-conductive member for electrophotography, process cartridge, and electrophotographic image forming apparatus

CANON KK24 citations94
US10416588B2Sep 17, 2019

Charging member, process cartridge, electrophotographic image forming apparatus, and method for manufacturing charging member

CANON KK29 citations94
US10280148B2May 7, 2019

Electroconductive member for electrophotography and quaternary ammonium salt

CANON KK28 citations94
US10018927B2Jul 10, 2018

Electroconductive member for electrophotography, process cartridge and electrophotographic apparatus

CANON KK29 citations94
US9958802B2May 1, 2018

Electroconductive member for electrophotography, process cartridge, and electrophotographic apparatus

CANON KK30 citations94
US9551949B2Jan 24, 2017

Electroconductive member for electrophotography, process cartridge, and electrophotographic apparatus

CANON KK36 citations94
US9547250B2Jan 17, 2017

Electroconductive member for electrophotography, process cartridge and electrophotographic apparatus

CANON KK37 citations94
US9541854B2Jan 10, 2017

Electroconductive member for electrophotography, process cartridge, and electrophotographic apparatus

CANON KK35 citations94
US9146482B2Sep 29, 2015

Electroconductive member for electrophotography, process cartridge, and electrophotographic apparatus

CANON KK37 citations94
US9128403B2Sep 8, 2015

Electrophotographic electrically conductive member

CANON KK34 citations94
US8852743B2Oct 7, 2014

Electro-conductive member for electrophotography, process cartridge, and electrophotographic apparatus

CANON KK40 citations94
US8771818B2Jul 8, 2014

Electrically conducting member for electrophotography, process cartridge and electrophotographic image forming apparatus

CANON KK39 citations94
US8628854B2Jan 14, 2014

Electro-conductive member, process cartridge, and electrophotographic apparatus

CANON KK40 citations94
US11137716B2Oct 5, 2021

Process cartridge and electrophotographic apparatus

CANON KK22 citations93
US9651888B2May 16, 2017

Electroconductive member with a surface layer including a porous body having a continuous open pore

CANON KK33 citations93
US11392050B2Jul 19, 2022

Process cartridge and electrophotographic apparatus

CANON KK14 citations86
US11366402B2Jun 21, 2022

Process cartridge and electrophotographic apparatus using the same

CANON KK18 citations86
US11347156B2May 31, 2022

Electro-conductive member for electrophotography, process cartridge for electrophotography, and electrophotographic image forming apparatus

CANON KK8 citations86
US10845724B2Nov 24, 2020

Electro-conductive member, process cartridge and image forming apparatus

CANON KK11 citations86
US11175602B2Nov 16, 2021

Electroconductive member, process cartridge, and electrophotographic image forming apparatus

CANON KK10 citations85
US11169454B2Nov 9, 2021

Electrophotographic electro-conductive member, process cartridge, and electrophotographic image forming apparatus

CANON KK11 citations85
US11112748B2Sep 7, 2021

Developing member, process cartridge and electrophotographic apparatus

CANON KK9 citations85
US11112719B2Sep 7, 2021

Process cartridge and electrophotographic apparatus capable of suppressing lateral running while maintaining satisfactory potential function

CANON KK20 citations85
US11340553B2May 24, 2022

Process cartridge and electrophotographic apparatus

CANON KK18 citations83
US11586121B2Feb 21, 2023

Electrophotographic electro-conductive member, process cartridge, and electrophotographic image forming device

CANON KK4 citations75
US11640122B2May 2, 2023

Electroconductive member, process cartridge, and image forming apparatus

CANON KK3 citations73
US11385559B2Jul 12, 2022

Electroconductive member, process cartridge, and image forming apparatus

CANON KK3 citations73
US11971683B2Apr 30, 2024

Electrophotographic electro-conductive member, process cartridge, and electrophotographic image forming apparatus

CANON KK2 citations72
US11397388B2Jul 26, 2022

Process for producing an electrophotographic electroconductive member

CANON KK3 citations72
US12032331B2Jul 9, 2024

Electroconductive member, process cartridge, and electrophotographic image forming apparatus

CANON KK2 citations66
US12339597B2Jun 24, 2025

Electro-conductive member, process cartridge, and electrophotographic image forming apparatus

CANON KK0 citations62
US12259674B2Mar 25, 2025

Electroconductive member, process cartridge, and electrophotographic image formation device

CANON KK0 citations52
US11378910B2Jul 5, 2022

Process cartridge and image forming apparatus

CANON KK0 citations52
US12498646B2Dec 16, 2025

Electrophotographic conductive member, process cartridge, and electrophotographic image forming apparatus

CANON KK0 citations51
US12510839B2Dec 30, 2025

Process cartridge and process cartridge set

CANON KK0 citations50

ISHII MOTOHAYA

3 patents

YAMAUCHI KAZUHIRO

1 patent

KIKUCHI YUICHI

1 patent

SHIMIZU CONSTRUCTION CO LTD

1 patent

YOKOGAWA ELECTRIC CORP

1 patent

MITUTOYO CORP

1 patent

NTT ELECTRONICS CORP

1 patent

NIPPON LIGHT METAL CO

1 patent