Patents Assigned to Idemitsu Kosan Co., Ltd.
  • Field-effect transistor, and process for producing field-effect transistor
    Patent number: 8530891
    Abstract: To provide a field-effect transistor improved in transparency, electrical properties, stability, uniformity, reproducibility, heat resistance and durability, and as a reduced overlap capacity between electrodes. A field-effect thin film transistor 1001 includes a gate electrode 1025, an active layer, a source electrode 1022 and a drain electrode 1023, wherein a crystalline oxide 1021 containing indium and having an electron carrier concentration of less than 1018/cm3 is used as the active layer, and the gate electrode 1025 is in self-alignment with the source electrode 1022 and the drain electrode 1023. The crystalline oxide 1021 contains a positive trivalent element different from a positive divalent element or indium.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: September 10, 2013
    Assignee: Idemitsu Kosan Co., Ltd
    Inventors: Kazuyoshi Inoue, Koki Yano, Masashi Kasami
  • Organic thin film transistor having an amorphous channel control layer with specified inozation potential
    Patent number: 8525156
    Abstract: An organic thin film transistor including a substrate having thereon at least three terminals of a gate electrode, a source electrode and a drain electrode, an insulator layer and an organic semiconductor layer, with a current between a source and a drain being controlled upon applying a voltage to the gate electrode, wherein a channel control layer including an amorphous organic compound having an ionization potential of less than 5.8 eV is provided between the organic semiconductor layer and the insulator layer, has excellent stability of a field-effect mobility and a high response speed even when stored at a high temperature.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: September 3, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroaki Nakamura, Yuki Nakano, Masatoshi Saito, Hirofumi Kondo
  • Sputtering target, transparent conductive film and transparent electrode
    Patent number: 8524123
    Abstract: A sputtering target which is composed of a sintered body of an oxide which contains at least indium, tin, and zinc and includes a spinel structure compound of Zn2SnO4 and a bixbyite structure compound of In2O3. A sputtering target includes indium, tin, zinc, and oxygen with only a peak ascribed to a bixbyite structure compound being substantially observed by X-ray diffraction (XRD).
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: September 3, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Koki Yano, Kazuyoshi Inoue, Akira Kaijo, Satoshi Umeno, Tokie Tanaka
  • PROCESS FOR PRODUCING UNSATURATED HYDROCARBON COMPOUND
    Publication number: 20130225892
    Abstract: Disclosed is a method for producing an unsaturated hydrocarbon compound wherein an ?-olefin is dimerized by using a catalyst system composed of a metallocene compound (A) and an oxygen-containing organometallic compound modified with a halogen-containing compound (B). By this method, an unsaturated hydrocarbon compound having unsaturated double bonds in a high ratio, in particular the one having a terminal vinylidene group can be produced efficiently.
    Type: Application
    Filed: April 8, 2013
    Publication date: August 29, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: Idemitsu Kosan Co., Ltd.
  • ORGANIC LUMINESCENT MEDIUM AND ORGANIC EL DEVICE
    Publication number: 20130221338
    Abstract: Provided is an organic luminescent medium containing a specific diaminopyrene derivative and a specific anthracene derivative. Also provided are an organic electroluminescence device capable of emitting light having a short wavelength (such as blue light) with high luminous efficiency and having a long lifetime by having such constitution that the organic EL device contains one or more organic thin film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin film layers contains the organic luminescent medium, and an organic luminescent medium that can be used in an organic thin film layer of the organic EL device.
    Type: Application
    Filed: April 5, 2013
    Publication date: August 29, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: IDEMITSU KOSAN CO., LTD.
  • SEMICONDUCTOR THIN FILM, METHOD FOR PRODUCING THE SAME, AND THIN FILM TRANSISTOR
    Publication number: 20130221348
    Abstract: A transparent semiconductor thin film 40 having low carrier concentration and a large energy band gap is produced by forming a thin film which contains indium oxide and an oxide of a positive divalent element, and then oxidizing or crystallizing the thin film.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 29, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: IDEMITSU KOSAN CO., LTD.
  • AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENCE DEVICE USING THE SAME
    Publication number: 20130221331
    Abstract: A compound is shown by the following formula (1). wherein l, m, and n are independently an integer from 1 to 3, Ar1 to Ar4 are independently a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 30 ring atoms, Ar5, Ar6, and Ar7 are independently a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 30 ring atoms, and p is an integer from 0 to 2, and Ar6 and N are bonded via a single bond when p is 0, provided that at least one of Ar1 to Ar4 is substituted with a substituted silyl group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, and at least one of Ar1 to Ar4 is substituted with a cyano group.
    Type: Application
    Filed: October 24, 2011
    Publication date: August 29, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko Mizuki, Hiroyuki Saito, Yuichiro Kawamura, Hirokatsu Ito, Masahiro Kawamura
  • ORGANIC ELECTROLUMINESCENCE DEVICE
    Publication number: 20130221333
    Abstract: Provided is an organic electroluminescence device having a long lifetime and capable of emitting blue light with high luminous efficiency. The organic electroluminescence device has an organic thin film layer composed of one or multiple layers including at least a light emitting layer and interposed between a cathode and an anode. In the organic electroluminescence device, the light emitting layer contains at least one kind selected from compounds each having a specific fluoranthene structure and at least one kind selected from fused ring-containing compounds each having a specific structure.
    Type: Application
    Filed: January 10, 2013
    Publication date: August 29, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: IDEMITSU KOSAN CO., LTD.
  • Method for producing lithium ion conductive solid electrolyte
    Patent number: 8518585
    Abstract: A method for producing a lithium ion conductive solid electrolyte including the step of bringing one or more compounds selected from phosphorous sulfide, germanium sulfide, silicon sulfide and boron sulfide into contact with lithium sulfide in a hydrocarbon-based solvent.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: August 27, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Tsuyoshi Ota, Minoru Senga, Shigeo Matsuzaki
  • Aromatic amine derivative and organic electroluminescent device using the same
    Patent number: 8518560
    Abstract: Provided are: an aromatic amine derivative in which a terminal substituent such as a dibenzofuran ring or a dibenzothiophene ring is bonded to a nitrogen atom directly or through an arylene group or the like; an organic electroluminescence device including an organic thin film layer formed of one or more layers including a light emitting layer and interposed between a cathode and an anode in which a layer of the organic thin film layer contains the aromatic amine derivative by itself or as a component of a mixture, and the device has a long lifetime and high luminous efficiency; and an aromatic amine derivative for realizing the device.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: August 27, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yumiko Mizuki, Masakazu Funahashi, Mitsunori Ito, Masahiro Kawamura
  • Polycarbonate copolymer, coating liquid using same, and electrophotographic photosensitive body
    Patent number: 8519082
    Abstract: A polycarbonate copolymer includes a repeating unit represented by a formula (1) below and a molar copolymer composition represented by Ar2/(Ar1+Ar2) in a range of 25 mol % to 50 mol %. In the formula (1): Ar1 and Ar2 represent a divalent aromatic group; a chain end is terminated by a monovalent aromatic group or a monovalent fluorine-containing aliphatic group; and n represents an average repeating number of an Ar1 block and is a numeral of 1.0 to 3.0, provided that Ar1 and Ar2 are not the same.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: August 27, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Takaaki Hikosaka, Hideyuki Miyamoto
  • CARBAZOLE COMPOUND, MATERIAL FOR ORGANIC ELECTROLUMINESCENCE DEVICE AND ORGANIC ELECTROLUMINESCENCE DEVICE
    Publication number: 20130214258
    Abstract: A compound of the invention is represented by a formula (1) below. In the formula (1), at least one of A1 and A2 represents a substituted or unsubstituted nitrogen-containing aromatic heterocyclic group. A material for an organic electroluminescence device contains the compound represented by the formula (1). The material for an organic electroluminescence device includes an organic thin-film layer between an anode and a cathode, in which the organic thin-film layer contains the compound represented by the formula (1).
    Type: Application
    Filed: February 1, 2013
    Publication date: August 22, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: IDEMITSU KOSAN CO., LTD.
  • CASHEW NUT SHELL LIQUID WITH IMPROVED STABILITY
    Publication number: 20130216666
    Abstract: The present invention provides a composition comprising a chelating agent and unheated cashew nut shell liquid.
    Type: Application
    Filed: November 4, 2011
    Publication date: August 22, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Seika Ooiwa, Kyo Nagashima, Shinji Ito, Masami Mochizuki
  • Compound for organic thin-film transistor and organic thin-film transistor using the compound
    Patent number: 8513654
    Abstract: A compound for an organic thin film transistor having a structure shown by the following formula (1): X1-L-Ar-L-X2??(1) wherein L is —C?C—, or —CH?CH— in a trans configuration, X1 and X2 are independently an alkyl group having 2 to 30 carbon atoms or a haloalkyl group having 1 to 30 carbon atoms, and Ar is a substituted or unsubstituted aromatic hydrocarbon group having 14 to 60 ring carbon atoms which is a condensed ring of three or more rings, or a substituted or unsubstituted aromatic heterocyclic group having 11 to 60 ring atoms which is a condensed ring of three or more rings.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: August 20, 2013
    Assignee: Idemitsu Kosan Co. Ltd.
    Inventors: Masatoshi Saito, Yuki Nakano, Hiroaki Nakamura
  • Anthracene derivative and organic electroluminescence device using the same
    Patent number: 8512875
    Abstract: Provided are a novel anthracene derivative of a specific structure in which benzofuran or benzothiophene is bonded to anthracene through an arylene group, a material for an organic electroluminescence device and a light emitting material for an organic electroluminescence device each containing the anthracene derivative, and an organic electroluminescence device including an organic thin film layer formed of one or plural layers including at least a light emitting layer, the organic thin film layer being interposed between a cathode and an anode, in which at least one layer of the organic thin film layer contains the anthracene derivative alone or as a component of a mixture. The organic electroluminescence device has high luminous efficiency and is capable of emitting light with a long lifetime, and the device can be realized by the anthracene derivative.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: August 20, 2013
    Assignees: Idemitsu Kosan Co., Ltd., Sony Corporation
    Inventors: Masahiro Kawamura, Takashi Obikawa, Shigeyuki Matsunami, Ichinori Takada, Yasunori Kijima
  • Diaminopyrene derivative and organic EL device using the same
    Patent number: 8512878
    Abstract: An organic EL device is provided that includes an emitting layer provided between an anode and a cathode. The emitting layer contains a diaminopyrene derivative represented by the following formula (1) as an emitting material for the organic EL device. The diaminopyrene derivative emits light with electrical energy.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: August 20, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Masakazu Funahashi
  • Thin film transistor, thin film transistor substrate, processes for producing the same, liquid crystal display using the same, and related devices and processes; and sputtering target, transparent electroconductive film formed by use of this, transparent electrode, and related devices and processes
    Patent number: 8507111
    Abstract: Provided are transparent electroconductive films and transparent electroconductive glass substrates, which contain a transparent electroconductive film and a metal thin film over the glass substrate.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: August 13, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuyoshi Inoue, Shigekazu Tomai, Masato Matsubara
  • Benzophenanthrene derivative and organic electroluminescent device employing the same
    Patent number: 8507106
    Abstract: A fused aromatic ring derivative shown by the following formula (1): wherein Ra and Rb are independently a hydrogen atom or a substituent, p is an integer of 1 to 8 and q is an integer of 1 to 11, when p is 2 or more, plural Ras may be independently the same or different and adjacent Ras may form a ring, when q is 2 or more, plural Rbs may be independently the same or different, L1 is a single bond, or a substituted or unsubstituted divalent linking group, and Ar1 is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 5 to 50 ring atoms, provided that the substituent of L1, the substituent of Ar1, Ra and Rb contain no substituted or unsubstituted amino group.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: August 13, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Masahiro Kawamura
  • Benzofluoranthene derivative and organic electroluminescence element comprising same
    Patent number: 8507900
    Abstract: A benzofluoranthene derivative represented by the following formula (1): wherein at least one pair of “R1 and R2” and “R3 and R4” is bonded together to form a ring represented by the following formula (2):
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: August 13, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Yumiko Mizuki
  • Polyolefin graft copolymer and adhesive composition
    Patent number: 8507604
    Abstract: A graft copolymer satisfying (a) to (e): (a) a main chain derived from one or more monomers selected from (I) an acrylic acid, (II) a methacrylic acid, (III) a vinyl ester, (IV) a styrene and (V) a vinyl group-containing silane compound, at least one kind of the monomer having a crosslinkable functional group, (b) a side chain derived from a reactive homopolymer ?-olefin having a meso pentad fraction (mmmm) of from 30 to 80% by mol or a copolymer of 50% by mass or more of at least one ?-olefin, (c) a graft ratio of from 1 to 150% by mass, (d) a weight average molecular weight of from 500 to 400,000, and (e) a molecular weight distribution (Mw/Mn) of from 1.5 to 4.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: August 13, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Takenori Fujimura, Ryo Aburatani, Shuji Machida, Shinichi Nakamura