Inventor
WATANABE YUKIMASA
JP22 patents
⚠️ This page may combine multiple inventors who share the name “WATANABE YUKIMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KYOCERA MITA CORP
10 patentsUS6391505B1May 21, 2002
Phthalocyanine crystal and its production, and electrophotosensitive material using the same
KYOCERA MITA CORP24 citations92
US6177220B1Jan 23, 2001
Stilbene derivative and method of producing the same, and electrophotosensitive material
KYOCERA MITA CORP17 citations84
US6593047B2Jul 15, 2003
Single-layer type electrophotosensitive material
KYOCERA MITA CORP18 citations83
US6528645B1Mar 4, 2003
Titanyl phthalocyanine crystal and production method of the same, and electrophotosensitive material and production method of the same
KYOCERA MITA CORP15 citations83
US6338927B1Jan 15, 2002
Stilbene derivative, method of producing the same, and electrophotosensitive material using the same
KYOCERA MITA CORP9 citations74
US6573017B2Jun 3, 2003
Single-layer type electrophotosensitive material
KYOCERA MITA CORP6 citations72
US6879794B2Apr 12, 2005
Image forming apparatus
KYOCERA MITA CORP4 citations62
US6858368B2Feb 22, 2005
Electrophotographic photoreceptor and image forming device
KYOCERA MITA CORP5 citations62
US6461779B1Oct 8, 2002
Single-layer type electrophotosensitive material
KYOCERA MITA CORP3 citations61
US7090952B2Aug 15, 2006
Electrophotosensitive material
KYOCERA MITA CORP1 citations51
MITA INDUSTRIAL CO LTD
6 patentsUS6022998AFeb 8, 2000
Stilbene derivative and method for producing the same
MITA INDUSTRIAL CO LTD37 citations92
US5994012ANov 30, 1999
Naphthoquinone derivative and electrophotosensitive material using same
MITA INDUSTRIAL CO LTD19 citations92
US5863688AJan 26, 1999
Naphthoquinone derivative
MITA INDUSTRIAL CO LTD26 citations92
US5773613AJun 30, 1998
Tryptoanthrinimine derivative and electrophotosensitive material using the same
MITA INDUSTRIAL CO LTD11 citations72
US6015646AJan 18, 2000
Electrophotosensitive material and image forming method using the same
MITA INDUSTRIAL CO LTD6 citations69
US5817810AOct 6, 1998
Tryptanthrine compounds
MITA INDUSTRIAL CO LTD4 citations60
KYOCERA DOCUMENT SOLUTIONS INC
5 patentsUS9158227B1Oct 13, 2015
Developing roller and developing apparatus and image forming apparatus using the same
KYOCERA DOCUMENT SOLUTIONS INC4 citations72
US9213229B2Dec 15, 2015
Positively chargeable electrophotographic photosensitive member and image forming apparatus
KYOCERA DOCUMENT SOLUTIONS INC1 citations49
US9158264B2Oct 13, 2015
Electrophotographic photosensitive member and image forming apparatus including electrophotographic photosensitive member
KYOCERA DOCUMENT SOLUTIONS INC1 citations47
US9298126B2Mar 29, 2016
Developing device and image forming apparatus including the same
KYOCERA DOCUMENT SOLUTIONS INC0 citations41
US9285713B2Mar 15, 2016
Developing device, and image forming apparatus provided with the same
KYOCERA DOCUMENT SOLUTIONS INC0 citations41