Inventor
WATANABE KAZUMASA
38 patents
⚠️ This page may combine multiple inventors who share the name “WATANABE KAZUMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KONISHIROKU PHOTO IND
19 patentsUS5039586AAug 13, 1991
Electrophotographic photoreceptor
KONISHIROKU PHOTO IND25 citations93
US6143452ANov 7, 2000
Electrophotographic photoreceptor
KONISHIROKU PHOTO IND24 citations92
US6268097B1Jul 31, 2001
Electrophotographic photoreceptor
KONISHIROKU PHOTO IND8 citations74
US5753395AMay 19, 1998
Electrophotographic photoreceptor
KONISHIROKU PHOTO IND13 citations74
US5354635AOct 11, 1994
Electrophotographic photoreceptor comprising mixed crystals of titanylphthalocyanine and vanadylphthalocyanine
KONISHIROKU PHOTO IND17 citations74
US5234785AAug 10, 1993
Electrophotographic photoreceptor and manufacturing method thereof
KONISHIROKU PHOTO IND14 citations74
US6406825B1Jun 18, 2002
Electrophotographic photoreceptor
KONISHIROKU PHOTO IND12 citations73
US5350655ASep 27, 1994
Electrophotographic photoreceptor with titanyl phthaloycyanine
KONISHIROKU PHOTO IND15 citations73
US4499181AFeb 12, 1985
Photographic recording material with indole redox releaser
KONISHIROKU PHOTO IND7 citations71
US5338637AAug 16, 1994
Electrophotographic photoreceptor with perylene and styryl compounds
KONISHIROKU PHOTO IND2 citations63
US5215840AJun 1, 1993
Electrophotographic photoreceptor and manufacturing method thereof
KONISHIROKU PHOTO IND6 citations63
US5853934ADec 29, 1998
Electrophotographic photoreceptor
KONISHIROKU PHOTO IND5 citations62
US4256831AMar 17, 1981
Light-sensitive photographic element comprising a magenta image dye-providing compound
KONISHIROKU PHOTO IND2 citations62
US4247629AJan 27, 1981
Light-sensitive photographic element comprising a cyan image dye-providing compound
KONISHIROKU PHOTO IND5 citations62
US4225708ASep 30, 1980
2-Sulfamoyl-5-sulfamido-1-naphthols
KONISHIROKU PHOTO IND4 citations62
US4520095AMay 28, 1985
Photographic light-sensitive element
KONISHIROKU PHOTO IND3 citations61
US5565288AOct 15, 1996
Electrophotographic photoreceptor
KONISHIROKU PHOTO IND5 citations58
US4209328AJun 24, 1980
Dye image forming process
KONISHIROKU PHOTO IND1 citations49
US4692393ASep 8, 1987
Photoreceptor having a photosensitive layer containing an azo compound
KONISHIROKU PHOTO IND0 citations42
ICHIKAWA CO LTD
10 patentsUS7128811B2Oct 31, 2006
Belt for a papermaking machine
ICHIKAWA CO LTD16 citations84
US6736939B2May 18, 2004
Shoe press belt
ICHIKAWA CO LTD16 citations84
US6514386B2Feb 4, 2003
Papermaking felt
ICHIKAWA CO LTD14 citations84
US6716318B2Apr 6, 2004
Papermaking press felt
ICHIKAWA CO LTD8 citations74
US6699368B2Mar 2, 2004
Shoe press belt and manufacturing method
ICHIKAWA CO LTD10 citations74
US6936139B2Aug 30, 2005
Shoe press apparatus of a papermaking machine
ICHIKAWA CO LTD2 citations63
US6858291B2Feb 22, 2005
Elastic belt for papermaking calender
ICHIKAWA CO LTD3 citations61
US6780287B2Aug 24, 2004
Belt for calendering
ICHIKAWA CO LTD5 citations61
US7135094B2Nov 14, 2006
Papermaking press felt
ICHIKAWA CO LTD4 citations54
US7311806B2Dec 25, 2007
Papermaking needle felt
ICHIKAWA CO LTD1 citations52