Inventor
UMEHARA SHOJI
JP13 patents
⚠️ This page may combine multiple inventors who share the name “UMEHARA SHOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
12 patentsUS4666810AMay 19, 1987
Photosensitive member for electrophotography comprising azo pigments
CANON KK34 citations92
US4830944AMay 16, 1989
Function separated photosensitive member having a diphenylamine derivative disazo charge generation material
CANON KK23 citations82
US4743523AMay 10, 1988
Photosensitive member for electrophotography
CANON KK21 citations82
US4501808AFeb 26, 1985
Recording medium and process employing a photosensitive organic film
CANON KK21 citations81
US4760003AJul 26, 1988
Electrophotographic photosensitive member containing disazo compound
CANON KK17 citations74
US4735882AApr 5, 1988
Trisazo photsensitive member for electrophotography
CANON KK8 citations74
US4702982AOct 27, 1987
Electrophotographic photosensitive member comprising disazo pigment
CANON KK13 citations74
US4868080ASep 19, 1989
Electrophotographic photosensitive member comprising aromatic azo pigment containing cyclic amino group
CANON KK14 citations73
US4418133ANov 29, 1983
Disazo photoconductive material and electrophotographic photosensitive member having disazo pigment layer
CANON KK6 citations73
US7598012B2Oct 6, 2009
Coloring compound and recording material using the same
CANON KK4 citations63
US4990625AFeb 5, 1991
Process for synthesis of N,N-disubstituted hydrazone
CANON KK3 citations60
US9785102B2Oct 10, 2017
Rotatable fixing member, manufacturing method thereof and fixing device
CANON KK0 citations41