Inventor · disambiguated record
Shoji Umehara
Also filed as: UMEHARA SHOJI
13 granted patents·1 pending application·167 citations·filing 1982–2013
92Inventor score
Top patents by PatentIndex Score
14 records- 0192US4666810APhotosensitive member for electrophotography comprising azo pigmentsCANON KK·Filed 1986·Granted May 19, 1987·34 cites·5 claims
- 0281US4830944AFunction separated photosensitive member having a diphenylamine derivative disazo charge generation materialCANON KK·Filed 1986·Granted May 16, 1989·23 cites·18 claims
- 0378US4743523APhotosensitive member for electrophotographyCANON KK·Filed 1986·Granted May 10, 1988·21 cites·17 claims
- 0478US4702982AElectrophotographic photosensitive member comprising disazo pigmentCANON KK·Filed 1986·Granted Oct 27, 1987·13 cites·10 claims
- 0571US4760003AElectrophotographic photosensitive member containing disazo compoundCANON KK·Filed 1986·Granted Jul 26, 1988·17 cites·8 claims
- 0666US4868080AElectrophotographic photosensitive member comprising aromatic azo pigment containing cyclic amino groupCANON KK·Filed 1987·Granted Sep 19, 1989·14 cites·15 claims
- 0765US8208844B2Roller for fixing and image fixing apparatus using roller for fixingOMATA MASAHITO·Filed 2009·Granted Jun 26, 2012·3 cites·12 claims
- 0864US7598012B2Coloring compound and recording material using the sameCANON KK·Filed 2004·Granted Oct 6, 2009·4 cites·4 claims
- 0962US4501808ARecording medium and process employing a photosensitive organic filmCANON KK·Filed 1983·Granted Feb 26, 1985·21 cites·56 claims
- 1059US9785102B2Rotatable fixing member, manufacturing method thereof and fixing deviceCANON KK·Filed 2013·Granted Oct 10, 2017·0 cites·13 claims
- 1151US4735882ATrisazo photsensitive member for electrophotographyCANON KK·Filed 1986·Granted Apr 5, 1988·8 cites·4 claims
- 1251US2011082260A1Rotatable fixing member, manufacturing method thereof and fixing deviceCANON KK·Filed 2010·Application pending·0 cites
- 1348US4418133ADisazo photoconductive material and electrophotographic photosensitive member having disazo pigment layerCANON KK·Filed 1982·Granted Nov 29, 1983·6 cites·26 claims
- 1446US4990625AProcess for synthesis of N,N-disubstituted hydrazoneCANON KK·Filed 1989·Granted Feb 5, 1991·3 cites·12 claims
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