Patents Examined by Camie Thompson
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Patent number: 7368181Abstract: An organic electroluminescent element including an organic compound layer which is composed of a C—F compound (PFPT) having a triazine group is provided. The organic electroluminescent element includes: two electrodes; and at least one organic compound layer formed between the two electrodes, in which the organic compound layer is doped with a triazine derivative compound represented by the following Formula: where each of R1, R2 and R3 is a perfluorophenylene derivative.Type: GrantFiled: July 15, 2005Date of Patent: May 6, 2008Assignee: Electronics and Telecommunications Research InstituteInventors: Hyoyoung Lee, Hye Yong Chu
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Patent number: 7357986Abstract: This invention provides security articles comprising fibers, threads and fiber sections (“dots”) possessing multiple verification characteristics. The fibers possess unique and difficulty duplicated combinations of complex cross-sections, components, and multiple luminescent responses. The many verifiable characteristics of the security fibers, threads and dots provide high levels of protection against fraudulent duplication of articles in which they are incorporated. The manifold security features provide means of tailoring specific identity characteristics for specific use and users.Type: GrantFiled: May 4, 2004Date of Patent: April 15, 2008Assignee: Honeywell International Inc.Inventors: Thomas Y-T. Tam, Alfred Siggel, Samir Z. Abdalla, Jiunn-Yow Chen, Thomas Potrawa, Huy X. Nguyen
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Patent number: 7276298Abstract: The present invention is related to an intermediate layer of an organic electroluminescent device comprising an amine derivative substance which may further comprise a functional group capable of forming crosslinks. In particular, the substance may have excellent solubility and can be easily formed into a thin film. Specifically, the thin film may be stable in the solvent and can be easily formed to various thicknesses. Furthermore, the band gaps and LUMO/HOMO values may be easily controlled depending of the characteristics of the hole transporting material, so that an intermediate layer with the desired characteristics may be formed. Accordingly, the introduction of an intermediate layer manufactured using the substance of the present invention as the intermediate layer may result in an organic electroluminescent device having high efficiency and a longer lifespan.Type: GrantFiled: November 30, 2004Date of Patent: October 2, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Soo-hyoung Lee, Yi-yeol Lyu, Eun-kyung Lee, Tae-yong Noh
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Patent number: 7226665Abstract: A multilayer composite contains a gel coat layer, a laminate layer, and a barrier layer disposed between the gel coat and the laminate layer. The laminate contains from 40–80% by weight paste and from 20–60% by weight reinforcing fibers. The barrier coat also comprises a cured polyester resin, and contains reinforcing fibers shorter than those in the laminate layer. The barrier layer has sufficient flexibility to avoid cracking during demolding and handling. Preferably, the barrier layer exhibits an elongation at break of more than 1%, and more preferably about 2% or more. The resin of the barrier layer can contain up to about 25% by weight of the resin of an isophthalic acid based polyester resin. The composites can be made using an open tool molding process.Type: GrantFiled: June 20, 2003Date of Patent: June 5, 2007Assignee: General Motors CorporationInventors: Hamid G Kia, Terrence J Wathen, Mark A Buffa, Harry A Mitchell
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Patent number: 7118810Abstract: The present invention relates to electroluminescent devices employing single-ion conductors as the materials for an electron- or hole-injecting layer. Preferred electroluminescent devices employ an electron- or hole-injecting layer made of single-ion conductors in a conventional electroluminescent device which comprises: a transparent substrate; a semitransparent electrode deposited on the transparent substrate; a hole-injecting layer positioned on the semitransparent electrode; an electroluminescent layer made of organic luminescent material, positioned on the hole-injecting layer; an electron-injecting layer positioned on the electroluminescent layer; and, a metal electrode deposited on the electron-injecting layer. The electroluminescent devices of the invention have excellent electroluminescent efficiency and low turn-on voltage, which make possible their application to the development of high efficiency electroluminescent devices.Type: GrantFiled: November 27, 2001Date of Patent: October 10, 2006Assignee: Korea Advanced Institute of Science & TechnologyInventors: O-Ok Park, Tae-Woo Lee
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Patent number: 7108907Abstract: A cellulose dope comprising an aqueous sodium hydroxide solution and cellulose dissolved in the solution, wherein the cellulose dope has a sodium hydroxide concentration (CNa) of from 6.5 to 11% by weight, a cellulose content (Cc) of from 5 to 10% by weight, a viscosity average degree of polymerization (DPc) of the cellulose of from 350 to 1,200 and a cellulose dissolution ratio (Sc) of 99.0% by weight or more, and wherein the zero-shear viscosity (?0) and the cellulose content (Cc) of the cellulose dope and the viscosity average degree of polymerization (DPc) of the cellulose in the cellulose dope satisfy the following formula (1): ?0=kCcm×DPcp ??(1) wherein: ?0 represents the zero-shear viscosity (mPa·s) of the cellulose dope, Cc represents the cellulose content (% by weight) of the cellulose dope, DPc represents the viscosity average degree of polymerization of the cellulose in the cellulose dope, k=3.9×10?11, m is a number of from 5 to 7, and p is a number of from 3 to 4.Type: GrantFiled: October 25, 2000Date of Patent: September 19, 2006Assignee: Asahi Kasei Kabushiki KaishaInventors: Chihiro Yamane, Kunihiko Okajima, Seiji Shimizu
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Patent number: 6991859Abstract: A cascaded organic electroluminescent device includes an anode, a cathode, and a plurality of organic electroluminescent units disposed between the anode and the cathode, wherein the organic electroluminescent units comprise at least a hole-transporting layer and an electron-transporting layer. The device also includes a connecting unit disposed between each adjacent organic electroluminescent unit, wherein the connecting unit comprises, in sequence, an n-type doped organic layer, and a p-type doped organic layer wherein the p-type doped organic layer includes a dihydrophenazine derivative compound.Type: GrantFiled: March 18, 2003Date of Patent: January 31, 2006Assignee: Eastman Kodak CompanyInventors: Kevin P. Klubek, Liang-Sheng Liao, Ching W. Tang, J. Ramon Vargas
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Patent number: 6991846Abstract: Paper based on a fiber composition and having at least one multitone-effect watermark. When observed in transmitted light, the watermark has a set of pale zones arranged in the manner of a screened image.Type: GrantFiled: January 19, 2001Date of Patent: January 31, 2006Assignee: Arjowiggins SecurityInventors: Stéphane Mallol, Yvan Thierry
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Patent number: 6984462Abstract: Disclosed are double-spiro organic compounds and an organic electroluminescence (EL) device using the same. The double-spiro organic compounds are configured to have at least three planar and substantially linear moieties, such that one planar moiety is located between two neighboring planar moieties and that the intervening planar moiety shares an atom with each of the two neighboring planar moieties. The double-spiro compounds generally have high melting point above about 300 degree C. and low crystallinity, which provide thermal stability to the organic EL devices. These organic compounds have good sublimability. They also have light-emitting, hole-injecting, hole-transporting, electron injection, electron-transporting properties and characteristics, which are favorable in the organic EL devices.Type: GrantFiled: November 19, 2003Date of Patent: January 10, 2006Assignee: LG Chem, Ltd.Inventors: Kong Kyeom Kim, Sehwan Son, Seokhee Yoon, Jae soon Bae, Youn-Gu Lee, Sung Gap Im, Jieun Kim, Jae Chol Lee
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Patent number: 6977113Abstract: Microfiber articles and methods and intermediates for their production, the microfiber articles being preferably produced from co-extruded multi-layer films, and the articles having a multi-layer construction that allows selection of the different layers to have different properties.Type: GrantFiled: October 9, 2001Date of Patent: December 20, 2005Assignee: 3M Innovative Properties CompanyInventors: Robert S. Kody, Mario A. Perez, John W. Longabach, Kimberley D. Klepzig, John M. Sebastian, Terry R. Hobbs, Matthew J. Michel, Timothy J. Lindquist, Ravi K. Sura
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Patent number: 6974602Abstract: A glass fiber wall covering is made by sequential application of aqueous dispersion and an image coating to selectively create an image for painted effects. The image pattern is based on a spatial expansion of second image coating upon heating during the drying process.Type: GrantFiled: December 29, 2003Date of Patent: December 13, 2005Assignee: Johns ManvilleInventor: Per Edlund
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Patent number: 6946207Abstract: An electroconductive device includes a pair of oppositely disposed electrodes, a luminescence layer and an electroconductive layer disposed between the electrodes. The electroconductive layer includes a mixture of a plurality of organic compounds which are mutually structural isomers and include a major component and a minor component. The mixture contains the major and minor components in a (major component/minor component) ratio of 1/1 to 9/1. When the electroconductive layer is used as a carrier injection or transport layer, preferably an electron injection layer, a resultant electroluminescence (EL) device exhibits a high luminescence efficiency.Type: GrantFiled: September 27, 2001Date of Patent: September 20, 2005Assignee: Canon Kabushiki KaishaInventors: Jun Kamatani, Hidemasa Mizutani, Shinjiro Okada, Akira Tsuboyama, Takao Takiguchi, Takashi Moriyama
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Patent number: 6919139Abstract: The present invention is generally directed to electroluminescent Ir(III) compounds with phosphinoalkoxides and phenylpyridines or phenylpyrimidines, and devices that are made with the Ir(III) compounds.Type: GrantFiled: February 3, 2003Date of Patent: July 19, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Vladimir Grushin, Viacheslav A. Petrov
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Patent number: 6908694Abstract: A luminescence device is constituted by a substrate, a first electrode disposed on the substrate, at least one organic luminescence function layer disposed on the first electrode, a second electrode disposed on the above at least one organic luminescence function layer, and an oxygen absorbent disposed between the substrate and the second electrode or between the first and second electrodes. To the luminescence device, a voltage is applied between the first and second electrodes to cause phosphorescence from at last one layer constituting the above-mentioned at least one organic luminescence function layer preferably containing the oxygen absorbent. The oxygen absorbent may be formed in a layer disposed at a region other than pixel portions.Type: GrantFiled: November 30, 2001Date of Patent: June 21, 2005Assignee: Canon Kabushiki KaishaInventors: Takashi Moriyama, Shinjiro Okada, Akira Tsuboyama, Takao Takiguchi, Koji Noguchi, Jun Kamatani, Manabu Furugori
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Patent number: 6893712Abstract: The transport member of the present invention is a laminate of skin and core layers made of CFRP. The skin layer comprises a prepreg made of a pitch type carbon fiber, oriented by ?20° to +20° with respect to a longitudinal direction (X-axis direction) of the transport member, having a tensile elasticity of 500 to 1000 GPa; and a prepreg of PAN type carbon fiber, oriented by +75° to +90° and/or ?75° to ?90° with respect to the longitudinal direction, having a tensile elasticity of 200 to 400 GPa. As a consequence, a transport member which is light in weight, easy to handle, while being excellent in its bending rigidity, vibration damping characteristic, and heat resistance can be obtained.Type: GrantFiled: September 19, 2001Date of Patent: May 17, 2005Assignee: Nippon Mitsubishi Oil Corp.Inventors: Kenichi Aoyagi, Takashi Kobayashi, Daisuke Uchida
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Patent number: 6863996Abstract: A fluorescent thin film is provided, including a matrix material containing as a main component a rare earth sulfide or a rare earth selenide and a rare earth element additive as a light emission center. The rare earth element additive is different from the rare earth element used for the matrix material.Type: GrantFiled: April 16, 2001Date of Patent: March 8, 2005Assignee: The Westaim CorporationInventor: Yoshihiko Yano
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Patent number: 6844090Abstract: An organic electroluminescent device is disclosed, which can obtain high luminance and high efficiency. The organic electroluminescent device includes a luminescent layer formed by doping a phosphor material on a host material expressed by the following chemical formula: where R is any one selected from a group consisting of H, an alkyl group, an allyl group, and halogen.Type: GrantFiled: September 4, 2002Date of Patent: January 18, 2005Assignee: LG Electronics Inc.Inventor: Hyoung Yun Oh
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Patent number: 6835473Abstract: An organic electroluminescence element with a light emission layer containing a host compound and a phosphorescent compound. The host compound contains a boron atom in the molecule and the phosphorescent compound is a metal complex containing a Group VIII metal.Type: GrantFiled: October 28, 2002Date of Patent: December 28, 2004Assignee: Konica CorporationInventors: Mitsunori Matsuura, Taketoshi Yamada, Motoi Kinoshita, Hiroshi Kita
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Patent number: 6830833Abstract: Fused conjugated polymers having the following general formula wherein X=C or N; R1-R16 is independently selected from H, D, alkyl, alkoxyl, silyl, aromatic ring, fused aromatic ring, heteroaromatic ring, fused heteroaromatic ring, diarylamino group, carbazole, and at least one of them being a crosslinkable group consisting of a vinyl double bond or an azide group are useful in the fabrication of organic light emitting devices.Type: GrantFiled: December 3, 2002Date of Patent: December 14, 2004Assignee: Canon Kabushiki KaishaInventor: Xiao-Chang Charles Li
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Patent number: 6800379Abstract: A compound represented by the following general formula (1) and a light-emitting device comprising the compound. In the general formula (1), R1 represents a hydrogen atom or a methyl group; R2 and R3 independently represent a hydrogen atom or a substituent and may bond together to form a ring; R4 represents a hydrogen atom or a substituent selected from the group consisting of alkyl groups, alkenyl groups, alkynyl groups, aryl groups, heterocyclic groups, alkylcarbonyl groups, arylcarbonyl groups, alkylsulfonyl groups, arylsulfonyl groups, alkoxycarbonyl groups, aryloxycarbonyl groups, carbamoyl groups and sulfamoyl groups; Z represents an atomic group forming an aromatic ring; A represents a comonomer unit; and k and n each represent a mole fraction, k being 1 to 100 (%), n being 0 to 99 (%), and the sum of k and n is 100 (%).Type: GrantFiled: October 1, 2001Date of Patent: October 5, 2004Assignee: Fuji Photo Film Co., Ltd.Inventor: Toshiki Taguchi