Inventor
YOUNG RALPH H
US34 patents
⚠️ This page may combine multiple inventors who share the name “YOUNG RALPH H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
EASTMAN KODAK CO
33 patentsUS6875524B2Apr 5, 2005
White light-emitting device with improved doping
EASTMAN KODAK CO104 citations98
US6565996B2May 20, 2003
Organic light-emitting device having a color-neutral dopant in a hole-transport layer and/or in an electron-transport layer
EASTMAN KODAK CO57 citations96
US5468583ANov 21, 1995
Cyclic bis-dicarboximide electron transport compounds for electrophotography
EASTMAN KODAK CO100 citations96
US4442193AApr 10, 1984
Photoconductive compositions and elements containing naphthalene bis-dicarboximide compounds
EASTMAN KODAK CO56 citations96
US6727644B2Apr 27, 2004
Organic light-emitting device having a color-neutral dopant in an emission layer and in a hole and/or electron transport sublayer
EASTMAN KODAK CO27 citations93
US6720090B2Apr 13, 2004
Organic light emitting diode devices with improved luminance efficiency
EASTMAN KODAK CO26 citations93
US6692846B2Feb 17, 2004
Organic electroluminescent device having a stabilizing dopant in a hole-transport layer or in an electron-transport layer distant from the emission layer
EASTMAN KODAK CO22 citations93
US5324604AJun 28, 1994
Multi-active electrophotographic element and imaging process using free radicals as charge transport material
EASTMAN KODAK CO21 citations93
US5266429ANov 30, 1993
Polyester-imides in electrophotographic elements
EASTMAN KODAK CO27 citations93
US7629741B2Dec 8, 2009
OLED electron-injecting layer
EASTMAN KODAK CO31 citations92
US7374828B2May 20, 2008
Organic electroluminescent devices with additive
EASTMAN KODAK CO30 citations92
US6168911B1Jan 2, 2001
Formulations for preparing metal oxide-based pigment-binder transparent electrically conductive layers
EASTMAN KODAK CO23 citations92
US4125414ANov 14, 1978
Organic photovoltaic elements
EASTMAN KODAK CO38 citations92
US7079091B2Jul 18, 2006
Compensating for aging in OLED devices
EASTMAN KODAK CO17 citations83
US7288330B2Oct 30, 2007
High performance white light-emitting OLED device
EASTMAN KODAK CO8 citations74
US5232800AAug 3, 1993
Method for improving charge mobility in electrophotographic photoreceptors
EASTMAN KODAK CO15 citations74
US5184323AFeb 2, 1993
Photorefractive device and process for its use
EASTMAN KODAK CO11 citations74
US4999809AMar 12, 1991
Photorefractive device and process for its use
EASTMAN KODAK CO19 citations74
US4927726AMay 22, 1990
Photoreceptor with polynuclear bisoxazole or bisthizole
EASTMAN KODAK CO10 citations74
US4913996AApr 3, 1990
Electrophotographic elements containing certain anthraquinone derivatives as electron-transport agents
EASTMAN KODAK CO8 citations74
US4877699AOct 31, 1989
Electrophotographic luminescent amplification process
EASTMAN KODAK CO8 citations74
US4869984ASep 26, 1989
Electrophotographic elements containing certain naphthoquinone derivatives as electron-transport agents
EASTMAN KODAK CO7 citations74
US5288573AFeb 22, 1994
Photoconductive elements which are sensitive to near-infrared radiation
EASTMAN KODAK CO10 citations73
US5300385AApr 5, 1994
Aromatic heterocyclic-substituted cyclic sulfone compounds and electrophotographic elements containing them
EASTMAN KODAK CO5 citations71
US7517595B2Apr 14, 2009
Electroluminescent devices with mixed electron transport materials
EASTMAN KODAK CO4 citations63
US4909966AMar 20, 1990
Naphthoquinone derivatives
EASTMAN KODAK CO3 citations63
US4869985ASep 26, 1989
Electrophotographic elements containing certain naphthoquinone derivatives as electron-transport agents
EASTMAN KODAK CO4 citations63
US7084425B2Aug 1, 2006
Organic electroluminescent devices
EASTMAN KODAK CO3 citations62
US5272032ADec 21, 1993
Multiactive electrophotographic elements containing electron transport agents
EASTMAN KODAK CO6 citations61
US5618950AApr 8, 1997
Electrophotographic elements and soluble cyclic sulfone electron transport agents
EASTMAN KODAK CO2 citations59
US5500317AMar 19, 1996
Electrophotographic elements containing soluble cyclic sulfone electron transport agents
EASTMAN KODAK CO4 citations59
US4921637AMay 1, 1990
Naphthoquinone derivatives
EASTMAN KODAK CO1 citations52
US5352802AOct 4, 1994
Aromatic heterocyclic-substituted cyclic sulfone compounds and electrophotographic elements containing them
EASTMAN KODAK CO0 citations50