Patents Examined by Brett A Crouse
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Patent number: 7777407Abstract: The present invention relates to organic light emitting devices (OLEDs) containing an electron transport layer comprising a triazine. The triazine can be doped with at least one of organic and inorganic materials. A display device comprising the OLEDs is also disclosed.Type: GrantFiled: May 4, 2005Date of Patent: August 17, 2010Assignee: LG Display Co., Ltd.Inventors: Hany Aziz, Zoran D. Popovic, Jennifer A. Coggan, Nan-Xing Hu
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Patent number: 7745988Abstract: A 3,6-diphenylcarbazole compound, which has a specific formula and realizes an organic electroluminescent device having high durability and high luminous efficiency. An electroluminescent device which includes an anode; a cathode which faces the anode; and at least one layer including a luminescent layer, optionally a hole transporting layer and an electron transporting layer, which is located between the anode and the cathode, wherein the at least one layer includes the 3,6-diphenylcarbazole compound.Type: GrantFiled: September 3, 2004Date of Patent: June 29, 2010Assignee: Ricoh Company, LimitedInventors: Masaomi Sasaki, Masafumi Torii, Toshiya Sagisaka, Takashi Okada, Shinichi Kawamura, Chihaya Adachi, Yuuichiroh Kawamura, Kenji Muneuchi
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Patent number: 7737627Abstract: The present invention relates to an organic electroluminescent (OEL) compound that comprises at least one fluorene derivative and at least one carbazole derivative. The compound has good electrical properties, light emitting properties and charge transport ability, and thus is suitable as a host material suitable for fluorescent and phosphorescent dopants of all colors including red, green, blue, white, etc., and as a charge transport material. An OEL display device that uses an organic layer that includes the OEL compound has a high efficiency, a low voltage, a high luminance, and a long lifespan because it has superior current density.Type: GrantFiled: April 4, 2005Date of Patent: June 15, 2010Assignee: Samsung Mobile Display Co., Ltd.Inventors: Seok-Hwan Hwang, Seok-Jong Lee, Young-Kook Kim, Seung-Gak Yang, Hee-Yeon Kim
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Patent number: 7737628Abstract: An aromatic amine derivative with a specified structure whose benzene ring is bonded with a cycloalkyl group. An organic electroluminescence device which comprises at least one organic thin film layer comprising a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, wherein at least one of the organic thin film layer comprises the aromatic amine derivative singly or in combination. The organic EL device employing the aromatic amine derivative reveals practically sufficient luminance even under low applied voltage, exhibits an enhanced efficiency of light emission, and is resistant to degrade even after a long time usage demonstrating a prolonged lifetime.Type: GrantFiled: January 23, 2006Date of Patent: June 15, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventor: Masakazu Funahashi
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Patent number: 7733012Abstract: A light-emitting device comprising a pair of electrodes and a light-emitting layer or a plurality of organic layers comprising a light-emitting layer disposed therebetween, the light-emitting layer or at least one of a plurality of organic layers comprising the light-emitting layer comprising at least one compound represented by the following general formula (1): wherein each of Ar11, Ar12, Ar13, Ar14 and Ar15 represents an aryl group or a heteroaryl group; Ar represents a benzene ring, a naphthalene ring, a phenanthrene ring or an anthracene ring; at least one of Ar, Ar11, Ar12, Ar13, Ar14 and Ar15 is a condensed aryl group, a condensed or uncondensed heteroaryl group or a group comprising a condensed aryl group or a condensed or uncondensed heteroaryl group; Ar11, Ar12, Ar13, Ar14 and Ar15 are not bonded to each other to form a ring; R11 represents a substituent; and n11 represents an integer of 0 or more.Type: GrantFiled: February 21, 2008Date of Patent: June 8, 2010Assignee: FUJIFILM CorporationInventors: Tatsuya Igarashi, Xuepeng Qui
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Patent number: 7733009Abstract: An electroluminescent device comprises a cathode, an anode, and has therebetween a light emitting layer (LEL), the device further containing an electron transport layer (ETL) on the cathode side of the LEL and an organic electron injection layer (EIL) contiguous to the ETL on the cathode side, wherein the ETL contains a monoanthracene compound bearing aromatic groups in the 2-, 9-, and 10-positions.Type: GrantFiled: April 27, 2006Date of Patent: June 8, 2010Assignee: Global OLED Technology LLCInventors: Denis Y. Kondakov, Scott R. Conley, Kevin P. Klubek, J. Ramon Vargas
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Patent number: 7727326Abstract: Concrete and mortar composites can be made with two or more sizes of fibers therein. The different sized fibers can be used to adjust the toughness and reliability of the composite material. The different sized fibers can also be used to increase the deflection of concrete or mortar compositions. The variable length of fibers provide for smaller fibers to exist in corners for more strength in smaller spaces. Different mixes of sizes of fibers can also adjust the stiffness of a concrete or mortar composite material. The fibers can be made from a variety of materials, lengths, shapes, aspect ratios or diameters. The fibers can make up variable portions of the composition. Mixing different aspect ratios of fibers together can be used to prevent clumping or balling of the fibers. Mixing of different modulus of elasticity fibers in different ratios can add to the toughness and strength of the composite.Type: GrantFiled: February 13, 2004Date of Patent: June 1, 2010Inventors: Julian P. Trangsrud, Clifford N. MacDonald
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Patent number: 7714501Abstract: It is an object of the present invention to provide a light emitting element which can reduce defective operation due to crystallization of a compound. One of the light emitting elements of the present invention has a layer, which generates electrons, between a first electrode and a second electrode. The layer generating electrons includes a phenanthroline derivative represented by the general formula (1) and a metal oxide. The metal oxide shows an electron donating property to the phenanthroline derivative represented by the general formula (1). Herein, in the general formula (1), R1 to R5 individually represents an alkyl group having 1 to 4 carbon atoms or a halogen group, and further at least one of R1 to R5 represents a halogen group.Type: GrantFiled: November 21, 2005Date of Patent: May 11, 2010Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Ryoji Nomura, Daisuke Kumaki, Satoshi Seo, Hisao Ikeda, Junichiro Sakata
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Patent number: 7705528Abstract: A halogenated aromatic monomer-metal complex useful for preparing a polymer for electronic devices such as a light-emitting diode (LED) device is described. The aromatic monomer-metal complex is designed to include a linking group that disrupts conjugation, thereby advantageously reducing or preventing electron delocalization between the aromatic monomer fragment and the metal complex fragment. Disruption of conjugation is often desirable to preserve the phosphorescent emission properties of the metal complex in a polymer formed from the aromatic monomer-metal complex. The resultant conjugated electroluminescent polymer has precisely controlled metal complexation and electronic properties that are substantially or completely independent of those of the polymer backbone.Type: GrantFiled: July 16, 2004Date of Patent: April 27, 2010Assignee: Sumitomo Chemical Company, LimitedInventors: Wanglin Yu, James J. O'Brien
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Patent number: 7695769Abstract: Provided is a nanotube-polymer composite which can effectively utilize characteristics of a carbon nanotube structure. The composite includes a carbon nanotube structure and a polymer, in which: the carbon nanotube structure has a network structure constructed by mutually cross-linking functional groups bonded to multiple carbon nanotubes through chemical bonding of the functional groups together; and the polymer is filled in the network structure.Type: GrantFiled: September 8, 2004Date of Patent: April 13, 2010Assignee: Fuji Xerox Co., Ltd.Inventors: Miho Watanabe, Kentaro Kishi, Chikara Manabe, Kazunori Anazawa, Masaki Hirakata, Taishi Shigematsu, Hiroyuki Watanabe, Takashi Isozaki, Shigeki Ooma, Shinsuke Okada
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Patent number: 7651789Abstract: To provide an organic electroluminescent device which suppresses crystallization of a material to be used in an organic electroluminescent device and which is good in luminous characteristics, device drive durability and storage stability, the organic electroluminescent device has at least one organic layer including a light emitting layer between a pair of electrodes, wherein the light emitting layer contains a compound represented by formula (1) defined in the specification and a light emitting material.Type: GrantFiled: February 18, 2005Date of Patent: January 26, 2010Assignee: Fujifilm CorporationInventors: Jun Ogasawara, Masayuki Mishima
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Patent number: 7635946Abstract: To provide an organic electroluminescent device having excellent durability and having high luminous efficiency and luminance, the organic electroluminescent device includes an organic compound layer containing a hole transport layer, a light emitting layer, a block layer, and an electron transport layer between a pair of electrodes, wherein the block layer contains an electron transport material and an electrically inactive organic compound capable of being subjected to dry film formation and having an energy difference Eg between highest occupied molecular orbital and lowest unoccupied molecular orbital of 4.0 eV or more.Type: GrantFiled: February 25, 2005Date of Patent: December 22, 2009Assignee: Fujifilm CorporationInventors: Masayuki Mishima, Jun Ogasawara
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Patent number: 7598666Abstract: An organic EL device is provided which is capable of providing high luminance and high luminous efficiency. In an organic EL device, a hole injecting electrode lies on a glass substrate, and a hole injecting layer, a hole transporting layer, and a light emitting layer are sequentially formed thereon. An electron injecting electrode lies on the light emitting layer. The light emitting layer contains a host material, a light emitting dopant, and a first light-emission assisting dopant. The first light-emission assisting dopant is composed of a rubrene derivative.Type: GrantFiled: June 4, 2002Date of Patent: October 6, 2009Assignee: Sanyo Electric Co., Ltd.Inventors: Yuji Hamada, Tsuyoshi Tsujioka
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Patent number: 7598667Abstract: Arylamine compounds having at least one spiro bond are provided to the layers of an electroluminescent device. The compounds act as hole transporting and luminescent host materials for both fluorescent and phosphorescent emission. Electroluminescent devices employing the arylamine compounds exhibit excellent luminous efficiency, heat resistance and device life.Type: GrantFiled: April 26, 2004Date of Patent: October 6, 2009Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hisayuki Kawamura, Tetsuya Inoue, Chishio Hosokawa
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Patent number: 7576484Abstract: An organic electroluminescence device is disclosed, to realize improvement of luminance and decrease on driving voltage, which includes an anode, a hole injecting layer, a hole transport layer, an emitting layer, and a cathode, wherein, the hole injecting layer and the hole transport layer are formed of the material expressed by the following chemical formula 1:Type: GrantFiled: March 21, 2005Date of Patent: August 18, 2009Assignee: LG Display Co., Ltd.Inventors: Kyung Hoon Lee, Jeong Dae Seo, Hyun Cheol Jeong, Chun Gun Park, Jung Keun Kim, Sung Kab Kim
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Patent number: 7560169Abstract: A wood composite board comprising balsam fir strands is disclosed.Type: GrantFiled: July 17, 2006Date of Patent: July 14, 2009Assignee: Huber Engineered Woods LLCInventors: Jianhua Pu, Eric N. Lawson
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Patent number: 7541736Abstract: A thieno[3,2-b]indole-based polymer and an organo-electroluminescent device in which the polymer is introduced into an organic layer are provided. The thieno[3,2-b]indole-based polymer may be easily prepared and has blue light-emitting characteristic. The organo-electroluminescent device adopting the organic layer using the thieno[3,2-b]indole-based polymer has improved color purity, efficiency, and luminance characteristics.Type: GrantFiled: January 19, 2005Date of Patent: June 2, 2009Assignee: Samsung Mobile Display Co., Ltd.Inventors: Byung-Hee Sohn, Hyun-Ju Lim
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Patent number: 7524567Abstract: A spirofluorene-based polymer which contains a spirofluorene structure as a basic unit and which is end-capped with functional moieties substituted by fluorine, and an organic electroluminescent device using an organic layer using the spirofluorene-based polymer. The organic electroluminescent device has improved efficiency, reduced driving voltage, and excellent thermal, optical and electrical stability.Type: GrantFiled: January 25, 2005Date of Patent: April 28, 2009Assignee: Samsung Mobile Display Co., Ltd.Inventors: Sang-Hoon Park, Tae-Yong Noh, Sang-Yeol Kim, Lyong-Sun Pu, Soo-Hyoung Lee, In-Nam Kang, Jhun-Mo Son
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Patent number: 7517592Abstract: A light-emitting device comprising a pair of electrodes and a light-emitting layer or a plurality of organic layers comprising a light-emitting layer disposed therebetween, the light emitting layer or at least one of a plurality of organic layers comprising the light-emitting layer comprising at least one compound represented by the following general formula (1): wherein each of Ar11, Ar12, Ar13, Ar14 and Ar15 represents an aryl group or a heteroaryl group; Ar represents a benzene ring, a naphthalene ring; a phenanthrene ring or an anthracene ring; at least one of Ar, Ar11, Ar12, Ar13, Ar14 and Ar15 is a condensed aryl group, a condensed or uncondensed heteroaryl group or a group comprising a condensed aryl group or a condensed or uncondensed heteroaryl group; Ar11, Ar12, Ar13, Ar14 and Ar15 are not bonded to each other to form a ring; R11 represents a substituent; and n11 represents an integer of 0 or more.Type: GrantFiled: July 10, 2002Date of Patent: April 14, 2009Assignee: FUJIFILM CorporationInventors: Tatsuya Igarashi, Xuepeng Qiu
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Patent number: RE40724Abstract: A multiple ply tissue paper structure is disclosed. The multiple ply tissue paper has plies having different texture values. In one embodiment, the multiple ply tissue paper has two plies having different calipers and macrodensities. In another embodiment, the multiple ply tissue paper has three plies, including a relatively untextured ply disposed between two relatively highly textured plies.Type: GrantFiled: January 20, 2004Date of Patent: June 9, 2009Assignee: The Procter & Gamble CompanyInventor: Steven Lee Barnholtz