P

Inventor

NISHIDA TSUTOMU

JP60 patents
⚠️ This page may combine multiple inventors who share the name “NISHIDA TSUTOMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CANON KK

38 patents
US10558132B2Feb 11, 2020

Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

CANON KK35 citations94
US10558133B2Feb 11, 2020

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

CANON KK29 citations94
US9869032B2Jan 16, 2018

Manufacturing method of phthalocyanine crystal by milling crystal transformation for at least 1,000 hours

CANON KK32 citations94
US9772596B2Sep 26, 2017

Image forming apparatus and electrophotographic photosensitive member

CANON KK29 citations94
US9645516B2May 9, 2017

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

CANON KK36 citations94
US9645515B2May 9, 2017

Electrophotographic photosensitive member and manufacturing method thereof, process cartridge and electrophotographic apparatus, and phthalocyanine crystal and manufacturing method thereof

CANON KK31 citations94
US9563139B2Feb 7, 2017

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

CANON KK36 citations94
US9436106B2Sep 6, 2016

Electrophotographic photosensitive member and manufacturing method therefor, process cartridge and electrophotographic apparatus including the electrophotographic photosensitive member, and phthalocyanine crystal and method producing therefor

CANON KK33 citations94
US9541850B2Jan 10, 2017

Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

CANON KK19 citations93
US9459545B2Oct 4, 2016

Electrophotographic photosensitive member, manufacturing method of electrophotographic photosensitive member, process cartridge and electrophotographic apparatus, and a solid solution and manufacturing method of a solid solution

CANON KK22 citations93
US9170506B2Oct 27, 2015

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

CANON KK23 citations92
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
US11256186B2Feb 22, 2022

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

CANON KK11 citations86
US11003102B2May 11, 2021

Electrophotographic image forming apparatus and process cartridge

CANON KK13 citations86
US10838315B2Nov 17, 2020

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

CANON KK13 citations86
US10831118B2Nov 10, 2020

Electrophotographic photosensitive member and method for producing electrophotographic photosensitive member

CANON KK18 citations86
US10747131B2Aug 18, 2020

Electrophotographic photosensitive member and method for manufacturing the same as well as process cartridge and electrophotographic image-forming apparatus

CANON KK15 citations86
US10691033B2Jun 23, 2020

Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

CANON KK15 citations86
US10642177B2May 5, 2020

Process cartridge and image-forming apparatus

CANON KK14 citations86
US10539892B2Jan 21, 2020

Electrophotographic photosensitive member, process cartridge, and electrophotographic image-forming apparatus

CANON KK18 citations86
US10747130B2Aug 18, 2020

Process cartridge and electrophotographic apparatus

CANON KK16 citations85
US10416581B2Sep 17, 2019

Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

CANON KK17 citations85
US9170507B2Oct 27, 2015

Method of producing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

CANON KK19 citations84
US9746790B2Aug 29, 2017

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus, and chlorogallium phthalocyanine crystal and method for producing the same

CANON KK2 citations73
US9720337B2Aug 1, 2017

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus, and chlorogallium phthalocyanine crystal and method for producing the same

CANON KK2 citations73
US9709907B2Jul 18, 2017

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

CANON KK4 citations73
US9335643B2May 10, 2016

Process for processing surface of electrophotographic photosensitive member and process for producing electrophotographic photosensitive member

CANON KK3 citations73
US9040218B2May 26, 2015

Solution of gallium phthalocyanine method for preparing the same method for producing gallium phthalocyanine crystal method for purifying composition containing gallium phthalocyanine and method for producing electrophotographic photosensitive member

CANON KK2 citations63
US10401746B2Sep 3, 2019

Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

CANON KK1 citations61
US12547087B2Feb 10, 2026

Electrophotographic apparatus and process cartridge

CANON KK0 citations52
US11500301B2Nov 15, 2022

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

CANON KK0 citations52
US11493853B2Nov 8, 2022

Electrophotographic photosensitive member, process cartridge and electrophotographic image forming apparatus

CANON KK0 citations52
US10012915B2Jul 3, 2018

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus, and chlorogallium phthalocyanine crystal and method for producing the same

CANON KK0 citations52
US9535345B2Jan 3, 2017

Solution of gallium phthalocyanine method for preparing the same method for producing gallium phthalocyanine crystal method for purifying composition containing gallium phthalocyanine and method for producing electrophotographic photosensitive member

CANON KK0 citations52
US9519232B2Dec 13, 2016

Electrophotographic photosensitive member, method for producing electrophotographic photosensitive member, process cartridge and electrophotographic apparatus, and hydroxygallium phthalocyanine crystal

CANON KK1 citations52
US9459544B2Oct 4, 2016

Hydroxygallium phthalocyanine crystal, electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

CANON KK0 citations52
US9341965B2May 17, 2016

Electrophotographic photosensitive member, method for manufacturing the same, electrophotographic apparatus, process cartridge, and hydroxygallium phthalocyanine crystal

CANON KK0 citations52

OTSUKA PHARMA CO LTD

4 patents

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

2 patents

KAWAI YASUHIRO

1 patent

OKUDA ATSUSHI

1 patent

TANAKA DAISUKE

1 patent

SUGIYAMA KAZUMICHI

1 patent

KOBE STEEL LTD

1 patent

KAWASAKI HEAVY IND LTD

1 patent

Showing the top 50 of 60 patents by PatentIndex Score.