Patents Assigned to Idemitsu Kosan Co., Ltd.
  • Oxide sintered body and sputtering target
    Patent number: 8647537
    Abstract: An oxide sintered body includes indium oxide and gallium solid-solved therein, the oxide sintered body having an atomic ratio “Ga/(Ga+In)” of 0.001 to 0.12, containing indium and gallium in an amount of 80 atom % or more based on total metal atoms, and having an In2O3 bixbyite structure.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: February 11, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Futoshi Utsuno, Kazuyoshi Inoue, Hirokazu Kawashima, Masashi Kasami, Koki Yano, Kota Terai
  • Lubricating oil for refrigerator and hydraulic fluid composition for refrigerator using the same
    Patent number: 8648022
    Abstract: The present invention proposes a lubricating oil for refrigerators comprising, as the base oil, a polyester-based derivative or a polyvinyl ether derivative and a polycarbonate-based oxygenated compound; a polyoxyalkylene glycol derivative; or a polyester-based derivative or a polyvinyl ether derivative and a polyoxyalkylene glycol derivative. The lubricating oil exhibits excellent miscibility with a refrigerant having one carbon atom and no chlorine atoms and, in particular, with difluoromethane and provides a hydraulic fluid composition exhibiting excellent antiwear, lubricity and stability.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: February 11, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kenji Mogami, Hirotaka Yamazaki, Naoko Tazaki
  • Optical semiconductor sealing material
    Patent number: 8648160
    Abstract: The present invention provides an optical semiconductor sealing material comprising a radically polymerized polymer of a methacrylate ester having an alicyclic hydrocarbon group containing 7 or more carbon atoms, e.g. an adamantyl group, a norbornyl group, or a dicyclopentanyl group; and an optical semiconductor sealing material comprising a radically polymerized polymer of 50 to 97 mass % of the methacrylate ester and 3 to 50 mass % of acrylate ester having a hydroxyl group. The optical semiconductor sealing material of the present invention is highly transparent and stable to UV light and thus does not undergo yellowing. In addition, the material exhibits excellent compatibility between heat resistance and refractive index, does not undergo deformation or cracking during heating processes such as reflow soldering, and shows high processability.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: February 11, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Tomoaki Takebe, Tsuyoshi Ota, Yutaka Obata, Hiroyuki Higuchi
  • Aromatic diamine derivative and organic electroluminescent device using the same
    Patent number: 8647754
    Abstract: Disclosed is an aromatic diamine derivative represented by the following general formula (I), which has a chrysene structure in which a phenyl group having a substituted or unsubstituted silyl group is a substituent for an amino group. Also disclosed is an organic electroluminescence device including an organic thin film layer formed of one or more layers including at least a light emitting layer and interposed between a cathode and an anode, in which at least one layer of the organic thin film layer contains the aromatic diamine derivative by itself or as a component of a mixture, the device having a long lifetime and high luminous efficiency.
    Type: Grant
    Filed: December 25, 2008
    Date of Patent: February 11, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yumiko Mizuki, Masakazu Funahashi, Masahiro Kawamura, Mitsunori Ito
  • In—Ga—Zn type oxide sputtering target
    Patent number: 8641930
    Abstract: A sputtering target including oxide A shown below and indium oxide (In2O3) having a bixbyite crystal structure: Oxide A: an oxide which includes an indium element (In), a gallium element (Ga) and a zinc element (Zn) in which diffraction peaks are observed at positions corresponding to incident angles (2?) of 7.0° to 8.4°, 30.6° to 32.0°, 33.8° to 35.8°, 53.5° to 56.5° and 56.5° to 59.5° in an X-ray diffraction measurement (CuK? rays).
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: February 4, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Koki Yano, Masayuki Itose, Mami Nishimura
  • Thin film transistor manufacturing method, thin film transistor, thin film transistor substrate and image display apparatus, image display apparatus and semiconductor device
    Patent number: 8642402
    Abstract: To provide a method for producing a thin film transistor improved in stability, uniformity, reproducibility, heat resistance, durability or the like, a thin film transistor, a thin film transistor substrate, an image display apparatus, an image display apparatus and a semiconductor device. In the semiconductor device, a crystalline oxide is used as an N-type transistor and the electron carrier concentration of the crystalline oxide is less than 2×1017/cm3. Furthermore, the crystalline oxide is a polycrystalline oxide containing In and one or more positive divalent elements selected from Zn, Mg, Cu, Ni, Co and Ca, and the atomic ratio In [In] and the positive divalent element [X][X]/([X]+[In]) is 0.0001 to 0.13.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: February 4, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Koki Yano, Kazuyoshi Inoue, Futoshi Utsuno, Masashi Kasami
  • Sintered complex oxide and sputtering target comprising same
    Patent number: 8641932
    Abstract: A composite oxide sintered body includes In2Ga2ZnO7 having a homologous crystal structure, and has a relative density of 90% or more, and an average crystal grain size of 10 ?m or less.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: February 4, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Koki Yano, Hirokazu Kawashima
  • Organic electroluminescence device
    Patent number: 8643268
    Abstract: An organic EL device includes a pair of electrodes and an organic compound layer between pair of electrodes. The organic compound layer includes an emitting layer including a first material and a second material. The second material is a fluorescent material. Singlet energy EgS(H) of the first material and singlet energy EgS(D) of the second material satisfy a relationship of the following formula (1). The first material satisfies a relationship of the following formula (2) in terms of a difference ?ST(H) between the singlet energy EgS(H) and an energy gap Eg77K(H) at 77K. EgS(H)>EgS(D)??(1) ?ST(H)=EgS(H)?Eg77K(H)<0.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: February 4, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Toshinari Ogiwara, Chishio Hosokawa
  • ORGANIC ELECTROLUMINESCENCE DEVICE
    Publication number: 20140027744
    Abstract: An organic electroluminescence device including two or more organic thin film layers including an emitting layer between an anode and a cathode, the emitting layer including at least one compound represented by the following formula (1), and an organic thin film layer that is in contact with the emitting layer on the cathode side comprising at least one benzimidazole compound represented by the following formula (A):
    Type: Application
    Filed: July 25, 2013
    Publication date: January 30, 2014
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Kei YOSHIDA, Toshihiro Iwakuma, Hideaki Nagashima, Ryohei Hashimoto
  • GRANULES IN LIQUID DOSAGE FORM
    Publication number: 20140030349
    Abstract: A formulation which comprises coated granules and a water-soluble gel, wherein the coated granules comprise an oil absorbent which comprises cashew nut shell liquid, anacardic acid, cardanol, or cardol, and wherein the coated granules are suspended in the water-soluble gel.
    Type: Application
    Filed: April 18, 2012
    Publication date: January 30, 2014
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Shinji Ito, Seika Ooiwa
  • PROCESS FOR PRODUCTION OF MESO-FORM AND RACEMIC FORM METALLOCENE COMPLEXES
    Publication number: 20140031574
    Abstract: A method for producing an anionized meso-form double-cross-linked ligand represented by formula (3), including: bringing a compound represented by formula (1) into contact with a compound represented by formula (2) at ?25° C. or less; and introducing an anionizing agent within 5 hours after the contact, wherein R1 to R10 are independently a hydrogen atom, a hydrocarbon group having 1 to 20 carbon atoms, or the like; A and A? are independently a cross-linking group containing an atom belonging to the 14th group of the periodic table; M and M? are independently an atom belonging to the 1st or the 2nd group of the periodic table.
    Type: Application
    Filed: November 24, 2011
    Publication date: January 30, 2014
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Minoru Yabukami, Takuji Okamoto
  • Lubricant composition for internal combustion engine
    Patent number: 8637438
    Abstract: A lubricating oil composition for internal combustion engines comprising a base oil containing at least one component selected from an ?-olefin oligomer having 16 to 40 carbon atoms obtained by oligomerizing ?-olefin(s) having 2 to 20 carbon atoms using a metallocene catalyst, and the hydrogenated derivative thereof; an ?-olefin oligomer having 16 to 40 carbon atoms derived from an ?-olefin dimer obtained using a metallocene catalyst, and the hydrogenated derivative thereof; and the like. The lubricating oil composition has an excellent low-temperature fluidity, a low evaporativity, and a good oxidation stability.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: January 28, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Ryou Yamada
  • Oxide material and sputtering target
    Patent number: 8637124
    Abstract: An oxide material including indium (In), tin (Sn), and metal element M, and including an ilmenite structure compound; a sputtering target composed thereof; a transparent conductive film formed by using such a sputtering target; and a transparent electrode composed of such a transparent conductive film.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: January 28, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Koki Yano, Kazuyoshi Inoue, Tokie Tanaka
  • MATERIAL FOR ORGANIC ELECTROLUMINESCENCE ELEMENT, AND ORGANIC ELECTROLUMINESCENCE ELEMENT USING THE MATERIAL
    Publication number: 20140021461
    Abstract: An organic electroluminescence device comprising a compound having a specific structure having a heteroatom and an organic electroluminescence device which comprises a cathode, an anode and an organic thin film layer which comprises at least one layer comprising at least a light emitting layer and is disposed between the cathode and the anode, wherein at least one layer in the organic thin film layer comprises the above compound. The device provides excellent efficiency of light emission, forms no defects in pixels, exhibits excellent heat resistance and has a long life.
    Type: Application
    Filed: September 27, 2013
    Publication date: January 23, 2014
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Toshihiro Iwakuma, Masahide Matsuura, Yuki Nakano, Hidetsugu Ikeda
  • Organic electroluminescence device and a method for producing the device
    Patent number: 8633475
    Abstract: An organic electroluminescence device includes: an anode; a cathode opposed to the anode; and a plurality of emitting units including at least a first emitting unit and a second emitting unit. The plurality of emitting units each includes: an emitting layer; and an intermediate unit between the first emitting unit and the second emitting unit. The intermediate unit includes an electron injecting layer, a zinc oxide layer and a hole injecting layer in this sequence from the anode. The electron injecting layer contains an electron donating material and is adjacent to the first emitting unit. The hole injecting layer contains an organic electron accepting material and is adjacent to the second emitting unit.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: January 21, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Jun Endo, Chishio Hosokawa
  • ESTER COMPOUND, LUBRICANT BASE OIL, LUBRICANT, GREASE BASE OIL, AND GREASE
    Publication number: 20140018563
    Abstract: An ester compound is represented by the following formula (1). In the formula: R1 and R2 each independently represent an alkyl group having 5 to 18 carbon atoms; R3n represents a hydrogen atom or an alkyl group having at most 5 carbon atoms; R4n represents hydrogen or CH2OR5n; R5n represents an alkyl group having 5 to 18 carbon atoms; and n represents an integer of 1 to 3.
    Type: Application
    Filed: March 23, 2012
    Publication date: January 16, 2014
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yoshio Hironaka, Hiroki Sekiguchi
  • AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENCE DEVICE USING THE SAME
    Publication number: 20140018536
    Abstract: An aromatic amine derivative represented by the following formula (1), wherein at least one of Ar1 to Ar3 is represented by the following formula (2), wherein X1 to X3 are independently a nitrogen atom or CR2, provided that two of X1 to X3 are a nitrogen atom and X1 and X3 are not simultaneously a nitrogen atom
    Type: Application
    Filed: July 15, 2013
    Publication date: January 16, 2014
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventor: Tomoki KATO
  • ORGANIC THIN-FILM SOLAR CELL AND ORGANIC THIN-FILM SOLAR CELL MODULE
    Publication number: 20140014183
    Abstract: An organic thin film solar cell including a cathode, a charge-generating layer and an anode being sequentially stacked, which further comprises a charge-transporting layer having a carrier mobility of 1×10?9 cm2/Vs or more at an electric field intensity of 0 V/cm between the cathode and the charge-generating layer and/or between the anode and the charge-generating layer.
    Type: Application
    Filed: March 29, 2012
    Publication date: January 16, 2014
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Ryoji Maeda, Hiroshi Tokailin
  • Aromatic amine derivative and organic electroluminescent device using same
    Patent number: 8629613
    Abstract: Provided are a novel aromatic amine derivative having an asymmetric structure and an organic electroluminescence device in which, an organic thin film layer comprising a single layer or plural layers including at least a light emitting layer is interposed between a cathode and an anode, at least one layer in the above organic thin film layer contains the aromatic amine derivative described above in the form of a single component or a mixed component, whereby molecules are less liable to be crystallized; a yield in producing the organic electroluminescence device is enhanced; and a lifetime is extended.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: January 14, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Nobuhiro Yabunouchi, Hisayuki Kawamura
  • Anthracene derivative and organic electroluminescent element using the same
    Patent number: 8629430
    Abstract: An anthracene derivative represented by the following formula (1): In the formula (1), Z is a structure represented by the following formula (2).
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: January 14, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masahiro Kawamura, Chishio Hosokawa, Masaki Numata