P

Inventor

WATANABE HIROAKI

JP160 patents
⚠️ This page may combine multiple inventors who share the name “WATANABE HIROAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CANON KK

15 patents
US8991053B2Mar 31, 2015

Charging member, process for its production, and electrophotographic apparatus

CANON KK29 citations94
US9910379B2Mar 6, 2018

Charging member with concave portions containing insulating particles and electrophotographic apparatus

CANON KK20 citations93
US9904199B2Feb 27, 2018

Charging member having outer surface with concave portions bearing exposed elastic particles, and electrophotographic apparatus

CANON KK21 citations93
US9360833B2Jun 7, 2016

Charging member, process cartridge and electrophotographic apparatus

CANON KK22 citations92
US8685601B2Apr 1, 2014

Electrophotographic member, method for producing the same, process cartridge and electrophotographic apparatus

CANON KK23 citations92
US8622881B1Jan 7, 2014

Conductive member, electrophotographic apparatus, and process cartridge

CANON KK25 citations92
US8532535B2Sep 10, 2013

Charging member, manufacturing method for charging member, and electrophotographic apparatus

CANON KK25 citations92
US11307509B2Apr 19, 2022

Electro-conductive member, method for producing same, process cartridge and electrophotographic image forming apparatus

CANON KK8 citations85
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
US10558136B2Feb 11, 2020

Charging member, manufacturing method of charging member, electrophotographic apparatus, and process cartridge

CANON KK16 citations85
US10317811B2Jun 11, 2019

Charging member, method for producing same, process cartridge and electrophotographic image forming apparatus

CANON KK14 citations85
US10146149B2Dec 4, 2018

Charging member, electrophotographic process cartridge, and electrophotographic image forming apparatus

CANON KK19 citations85
US9372429B2Jun 21, 2016

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

CANON KK17 citations82

HARADA MASAAKI

4 patents

SHIMIZU CONSTRUCTION CO LTD

3 patents

WATANABE HIROAKI

3 patents

KOMATSU MFG CO LTD

3 patents

UNISIA JECS CORP

3 patents

KYOCERA CONNECTOR PROD CORP

2 patents

FUJITSU LTD

2 patents

KAWASUMI LAB INC

1 patent

TAKENAKA ERIKA

1 patent

SPANSION LLC

1 patent

INAX CORP

1 patent

PIONEER VIDEO CORP

1 patent

TOSHIBA TEC KK

1 patent

NOSE KEIJI

1 patent

MITSUBISHI PAPER MILLS LTD

1 patent

(unassigned)

1 patent

HOYA CANDEO OPTRONICS CORP

1 patent

IBIDEN CO LTD

1 patent

NICHIHA KK

1 patent

TORAY PLASTICS AMERICA INC

1 patent

HONDA MOTOR CO LTD

1 patent

MURABAYASHI SHINYA

1 patent

Showing the top 50 of 160 patents by PatentIndex Score.