P

Inventor

TANAKA MASATO

JP378 patents
⚠️ This page may combine multiple inventors who share the name “TANAKA MASATO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CANON KK

24 patents
US7910274B2Mar 22, 2011

Electrophotographic photosensitive member, method of producing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

CANON KK57 citations96
US9869032B2Jan 16, 2018

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

CANON KK32 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
US9645516B2May 9, 2017

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

CANON KK36 citations94
US9563139B2Feb 7, 2017

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

CANON KK36 citations94
US9535347B2Jan 3, 2017

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

CANON KK23 citations94
US9459542B2Oct 4, 2016

Electrophotographic photosensitive member, process cartridge, electrophotographic apparatus, and gallium phthalocyanine crystal

CANON KK24 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
US9068083B2Jun 30, 2015

Method of producing gallium phthalocyanine crystal and method of producing electrophotographic photosensitive member using the method of producing gallium phthalocyanine crystal

CANON KK28 citations94
US8974991B2Mar 10, 2015

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

CANON KK31 citations94
US8841052B2Sep 23, 2014

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

CANON KK32 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
US7517626B2Apr 14, 2009

Electrophotographic photosensitive member, and electrophotographic apparatus and process cartridge which make use of the same

CANON KK26 citations93
US7276318B2Oct 2, 2007

Electrophotographic photosensitive member, and electrophotographic apparatus and process cartridge which make use of the same

CANON KK24 citations93
US7245851B2Jul 17, 2007

Electrophotographic apparatus

CANON KK23 citations93
US6683175B2Jan 27, 2004

Porphyrin compound, and electrophotographic photosensitive member, process-cartridge and apparatus using the compound

CANON KK19 citations93
US6472524B2Oct 29, 2002

Phthalocyanine compounds, process for production thereof and electrophotographic photosensitive member using the compounds

CANON KK18 citations93
US6248490B1Jun 19, 2001

Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

CANON KK30 citations93
US6245472B1Jun 12, 2001

Phthalocyanine compounds, process for production thereof and electrophotographic photosensitive member using the compounds

CANON KK24 citations93
US6190811B1Feb 20, 2001

Electrophotographic photosensitive member process cartridge and electrophotographic apparatus

CANON KK48 citations93
US5885737AMar 23, 1999

Hydroxygallium phthalocyanine compound, production process therefor and electrophotographic photosensitive member using the compound

CANON KK28 citations93
US5811212ASep 22, 1998

Electrophotographic photosensitive member containing an azocalix n!arene compound and electrophotographic apparatus and process cartridge comprising the photosensitive member

CANON KK34 citations93
US5666589ASep 9, 1997

Electrophotographic apparatus and image forming method using a photosensitive member with exposure characteristics responsive to field intensity

CANON KK20 citations93

DAINIPPON SCREEN MFG

11 patents

YAMATAKE CORP

4 patents

YAMATAKE HONEYWELL CO LTD

3 patents

SONY CORP

2 patents

SHINKO ELECTRIC IND CO

1 patent

AGENCY IND SCIENCE TECHN

1 patent

TIYODA SEISAKUSHO KK

1 patent

TANAKA MASATO

1 patent

HORIKAWA YASUYOSHI

1 patent

PROCTER & GAMBLE

1 patent

Showing the top 50 of 378 patents by PatentIndex Score.