Abstract: Disclosed is an OLED device comprising an anode and a cathode and, located therebetween, a light emitting layer (LEL) containing a host and a stabilizer, wherein the stabilizer contains at least 5 fused rings and exhibits a first triplet energy level below 130 kJ/mol.
Type:
Grant
Filed:
April 24, 2002
Date of Patent:
September 4, 2007
Assignee:
Eastman Kodak Company
Inventors:
Denis Y. Kondakov, Christopher T. Brown, Viktor Jarikov
Abstract: The invention relates to an imaging member comprising an image layer and a base material wherein said base material comprises at least one oriented sheet laminated to a core sheet comprising a vacuous composite of polyolefin and polyester having a density of less than 0.7 g/cc.
Type:
Grant
Filed:
September 26, 2002
Date of Patent:
September 4, 2007
Assignee:
Eastman Kodak Company
Inventors:
Robert P. Bourdelais, Thomas M. Laney, Peter T. Aylward
Abstract: Disclosed is an optical film that comprises certain radiation cured (meth)acrylate binders and, desirably, irregular semicrystalline asymmetric particles.
Type:
Grant
Filed:
November 12, 2002
Date of Patent:
August 7, 2007
Assignee:
Eastman Kodak Company
Inventors:
Mridula Nair, Tamara K. Jones, Bradley M. Houghtaling, Joseph S. Sedita, Gary A. Rakes
Abstract: An electroluminescent device comprising a host material and a rubrene derivative having a naphthacene nucleus comprising four fused phenyl rings a, b, c, and d, in order, containing two secondary phenyl ring groups linked to the “c” ring, each bearing directly or indirectly a fluoro or perfluoroalkyl group, wherein each fluoro or perfluoroalkyl group is either: a) linked directly to one of said secondary phenyl rings and is located on a meta or ortho position, or b) located in any position of another aryl group linked directly or indirectly to one of the secondary phenyl rings.
Type:
Grant
Filed:
March 16, 2004
Date of Patent:
April 24, 2007
Assignee:
Eastman Kodak Company
Inventors:
Margaret J. Helber, Tukaram K. Hatwar, Hans F. Schmitthenner, Peter G. Bessey, Manju Rajeswaran
Abstract: Disclosed is an optical film comprising a layer containing layered clay particles in a radiation cured binder. Also disclosed is a coating dispersion and a method of forming an optical film comprising coating the dispersion on a flexible transparent polymeric support and an LCD or touch screen display incorporating the film.
Type:
Grant
Filed:
October 21, 2003
Date of Patent:
April 10, 2007
Assignee:
Eastman Kodak Company
Inventors:
Bradley M. Houghtaling, Mridula Nair, Yuanqiao Rao, Tamara K. Jones, Robert J. Kress
Abstract: An electroluminescent device comprises a cathode, an anode, and therebetween a layer containing a host material and an ethynyl compound of Formula (1): A-C?C-B??(1) in an amount sufficient to stabilize the device wherein A and B represent independently selected fused carbocyclic ring groups.
Abstract: A process for forming a film of the facial-isomer of an aluminum trisquinoline complex comprises depositing a film of an aluminum trisquinoline complex on a support, depositing an inert barrier layer over the layer of aluminum trisquinoline complex that encapsulates aluminum trisquinoline complex to form a multilayer composite, and then heating the composite at a temperature below the melting point temperature of the complex for a time sufficient to convert the aluminum trisquinoline complex to at least 99 mol % of the facial-isomer that fluoresces with a maximum emission intensity below 510 nm. The product has a blue hue.
Type:
Grant
Filed:
April 29, 2004
Date of Patent:
January 30, 2007
Assignee:
Eastman Kodak Company
Inventors:
Manju Rajeswaran, Thomas N. Blanton, Ching W. Tang
Abstract: A process for manufacturing a multilayer compensator comprising one or more polymeric A layers and one or more polymeric B layers, wherein said A layers comprise a polymer having an out-of-plane birefringence not more negative than ?0.01, said B layers comprise an amorphous polymer having an out-of-plane birefringence more negative than ?0.01, and the overall in-plane retardation (Rin) of said multilayer compensator is greater than 20 nm and the out-of-plane retardation (Rth) of said multilayer compensator is more negative than ?20 nm wherein the process employs laminating layers or coating the layers from solvent.
Type:
Grant
Filed:
April 24, 2006
Date of Patent:
January 16, 2007
Assignee:
Eastman Kodak Company
Inventors:
James F. Elman, Dennis J. Massa, Charles C. Anderson, Tomohiro Ishikawa
Abstract: A photographic element comprising a light-sensitive silver halide emulsion layer containing a 1H-pyrazolo[1,5-b][1,2,4]triazole coupler represented by structure (I): wherein R1, R2, and R3 are independently selected unsubstituted alkyl groups comprising of 3 or less carbons with the proviso that one or more of the R1, R2, and R3 groups can be joined to form a ring; R is a straight, cyclic or branched aliphatic carbon chain group and contains at least 9 aliphatic carbon atoms; each R? is an independently selected alkyl or halogen substituent, n is 0 to 3, and R?, when present, does not include an R? in the ring position between the pyrazolotriazole nucleus and the sulfonamide; and X is hydrogen or halogen.
Type:
Grant
Filed:
January 18, 2005
Date of Patent:
December 26, 2006
Assignee:
Eastman Kodak Company
Inventors:
Robert F. Romanet, Michael W. Crawley, Susan M. Fischer
Abstract: Disclosed is an electroluminescent device comprising a light-emitting layer including a light emitting material that contains an organometallic complex comprising (1) a metal selected from the group consisting of Ir, Rh, Os, Pt, and Pd and (2) a diazole group ligand wherein the ligand has a fused aromatic ring group including a nitrogen of the diazole as a bridgehead nitrogen. The device provides useful light emission.
Type:
Grant
Filed:
December 5, 2003
Date of Patent:
December 12, 2006
Assignee:
Eastman Kodak Company
Inventors:
Barbara B. Lussier, Joseph C. Deaton, David J. Giesen
Abstract: An electroluminescent device includes a light-emitting layer containing a host material and: (a) a compound of Formula (1): X1—Ar1—C(R1)?C(R2)—Ar2 ??(1) wherein: Ar1 represents a divalent aromatic group; Ar2 represents an aromatic group; X1 represents at least one electron-donating group; R1 and R2 independently represent hydrogen or a substituent; and (b) a light-emitting boron complex having an absorption spectrum that overlaps with the emission spectrum of compound (1). The device serves to improve luminance efficiency while maintaining good color purity.
Type:
Grant
Filed:
June 30, 2004
Date of Patent:
December 12, 2006
Assignee:
Eastman Kodak Company
Inventors:
Margaret J. Helber, Michele L. Ricks, William F. Nichols, Thomas L. Matochik, William B. Vreeland, Kevin M. Donovan
Abstract: Disclosed is an optical compensator for a liquid crystal display having improved optical properties, comprising a transparent polymeric support bearing an orientation layer and a photochemically cured optically anisotropic layer, in that order, wherein a photochemically cured barrier layer is present between the orientation layer and the support, and wherein the barrier layer, as disposed on the support, exhibits an indentation modulus of less than 2 GPa.
Type:
Grant
Filed:
March 17, 2003
Date of Patent:
December 12, 2006
Assignee:
Eastman Kodak Company
Inventors:
Mridula Nair, Tamara K. Jones, Bradley M. Houghtaling, Jeffrey A. Trest, Joseph S. Sedita
Abstract: Disclosed is an article comprising a polymer sheet containing a plurality of integral polymer conduit channels containing a transparent conductive material in which two or more such channels terminate.
Type:
Grant
Filed:
April 28, 2003
Date of Patent:
November 21, 2006
Assignee:
Eastman Kodak Company
Inventors:
Robert P. Bourdelais, Cheryl J. Kaminsky
Abstract: The invention relates to a light diffuser comprising a polymeric film wherein the film comprises a plurality of layers having void geometry in which the x/y/z size or frequency varies by at least 28% between at least two layers.
Type:
Grant
Filed:
December 14, 2001
Date of Patent:
November 7, 2006
Assignee:
Eastman Kodak Company
Inventors:
Thomas M. Laney, Michael R. Brickey, Cheryl J. Kaminsky, Robert P. Bourdelais
Abstract: An electroluminescent device comprises a light-emitting layer containing a light emitting phosphorescent material that contains an organometallic complex comprising iridium fully complexed with indole ligand groups or comprising Ir, Rh, Os, Ru, Pt, and Pd and an isoindole compound. The invention further comprises compositions of certain such complexes as well as a display or area lighting devices and a process for emitting light. The organometallic materials function as useful phosphorescent light emitting materials in electroluminescent devices.
Type:
Grant
Filed:
December 5, 2003
Date of Patent:
October 10, 2006
Assignee:
Eastman Kodak Company
Inventors:
Joseph C. Deaton, Margaret J. Helber, David J. Giesen
Abstract: A photographic element comprises a silver halide emulsion layer having associated therewith a dye forming coupler and a combination of a carbonamide compound, a phenolic compound, and an electron-rich compound. Such a combination provides improved dye stability.
Type:
Grant
Filed:
April 6, 2005
Date of Patent:
September 19, 2006
Assignee:
Eastman Kodak Company
Inventors:
Albert J. Mura, Jr., Gary M. Russo, Shari L. Eiff, Brian Thomas
Abstract: Disclosed is an electroluminescent device comprising a light-emitting layer containing a phosphorescent light emitting material that contains an organometallic complex comprising a metal selected from the group consisting of Ir, Rh, Os, Pt, and Pd and a pyrazole compound fused with at least one aromatic ring. The device provides useful light emissions.
Type:
Grant
Filed:
December 5, 2003
Date of Patent:
September 5, 2006
Assignee:
Eastman Kodak Company
Inventors:
Joseph C. Deaton, Zbyslaw R. Owczarczyk, David J. Giesen
Abstract: Disclosed is a multilayer film comprising a substrate bearing an aligned liquid crystal layer wherein the aligned liquid crystal layer contains an azolium salt represented by formula (I): wherein the subscripts represent the ring positions and each X is independently N or C—R; each Z is independently N, N—R, C—(R)(R), O, S, SO2, SO, C?O, C?S, or C?NR; each R group is independently hydrogen or a substituent; and Y is a charge balancing anion, which may be a separate moiety or part of an X, Z, or R; provided two or more X, Z and R groups may form a ring; provided the salt may be part of an oligomer or polymer. Such a film provides a predetermined increase in pre-tilt angle for use in liquid crystal devices.
Type:
Grant
Filed:
December 15, 2003
Date of Patent:
August 29, 2006
Assignee:
Eastman Kodak Company
Inventors:
Deepak Shukla, Thomas R. Welter, James F. Elman, Samir Y. Farid
Abstract: Disclosed is a useful electroluminescent device comprising a cathode, an anode, and therebetween a light emitting layer containing a host material and a phosphorescent light-emitting material wherein the host material is represented by formula (1): X?-A-X???(1) wherein: A is selected from the group consisting of an unsubstituted phenylene ring, a biphenylene group, a terphenylene group, a naphthylene group, and a fluorene group; and each of X? and X? is an independently selected aromatic group bearing an ortho aromatic substituent.
Type:
Grant
Filed:
December 5, 2003
Date of Patent:
August 15, 2006
Assignee:
Eastman Kodak Company
Inventors:
Douglas R. Robello, Joseph C. Deaton, David J. Giesen, Christopher T. Brown, Jianmin Shi
Abstract: Disclosed is a process for preparing a 6-chloro-2,5-dicarbonamido phenol compounds comprising a step employing a 2-alkyl-6-aminobenzoxazole to form a 2-alkyl-6-amino-7-chlorobenzoxazole in which the 2-alkyl group is unbranched at the ? carbon. It also provides intermediate compounds useful in the process. The process provides a simple and safe way to prepare 6-chloro-2,5-dicarbonamido phenol compounds in good yield.