Patents Assigned to Idemitsu Kosan Co., Ltd.
  • Publication number: 20130200346
    Abstract: In an organic electroluminescence display device (30) comprising an organic EL element (26) having a structure wherein an organic luminescent medium (24) is sandwiched between a top electrode (20) and a bottom electrode (22), and a driving circuit (14) for driving the organic EL element (26), the organic luminescent medium (24) comprises a host compound and a triplet-related luminous compound and the driving circuit (14) applies a electric pulse voltage or pulse current having a frequency of 30 Hz or more and a duty ratio of 1/5 or less. In this way, it is possible to provide an organic EL display device which consumes a low electric power and has a long luminous life span, and a method for driving the same.
    Type: Application
    Filed: March 13, 2013
    Publication date: August 8, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: IDEMITSU KOSAN CO., LTD.
  • Patent number: 8501329
    Abstract: A compound having the following structure as at least a part: wherein FA and FA? are a substituted or unsubstituted fused aromatic ring which may be the same or different, and at least one of FA and FA? is a fused aromatic ring having 4 or more rings.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: August 6, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Mitsunori Ito, Masahiro Kawamura
  • Patent number: 8502002
    Abstract: Provided is an immersion oil for microscope including a liquid olefin polymer (A), a liquid diene polymer (B), a diaryl alkane (C), and an alkyl benzene (D), the immersion oil for microscope being capable of maintaining low fluorescence of its own over a long period of time, having good characteristics required for an immersion oil for microscope, such as good refractive index, Abbe number, viscosity, and resolution, and being particularly suitable as an immersion oil for a fluorescence microscope.
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: August 6, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yuichi Fukunaga, Toyozo Fujioka, Toshihiro Mine
  • Publication number: 20130196889
    Abstract: An aqueous detergent according to the invention contains substantially no polyalkylene glycol, but contains a salt of at least one of the following carboxylic acids A, B and C: A: an aliphatic monobasic carboxylic acid having a total carbon number of 9 or 10 and including a branched alkyl group; B: sebacic acid; and C: an aromatic monobasic carboxylic acid having a total carbon number of 11 to 13.
    Type: Application
    Filed: August 25, 2011
    Publication date: August 1, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: Hiroshi Kawasaki
  • Publication number: 20130187137
    Abstract: An aromatic amine derivative with a specific structure having a carbazole skeleton to which a diarylamino group bonds via a bonding group. An organic electroluminescence device which is composed of one or more organic thin film layers including at least one light emitting layer sandwiched between a cathode and an anode, wherein at least one of the organic thin film layers contains the aromatic amine derivative singly or as its mixture component. Organic electroluminescence devices with enhanced efficiency of light emission and a compound realizing the devices are provided.
    Type: Application
    Filed: January 25, 2013
    Publication date: July 25, 2013
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventor: Idemitsu Kosan Co., Ltd.
  • Patent number: 8491810
    Abstract: The present invention provides a lubricating oil for a compression type refrigerator including a polyvinyl ether-based compound containing an alkylene glycol or polyoxyalkylene glycol unit and a vinyl ether unit in a molecule and having a molecular weight in a range of 300 to 3,000; and an organic carboxylic acid ester of a polyhydric alcohol in which the ester contains two or more free hydroxyl groups. The lubricating oil for a compression type refrigerator of the present invention has high miscibility and high viscosity index, and is excellent in wear resistance and also corrosion prevention property under carbon dioxide atmosphere.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: July 23, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masato Kaneko, Harutomo Ikeda
  • Patent number: 8491811
    Abstract: The present invention provides a lubricating oil for a compression type refrigerator including a polyvinyl ether-based compound containing an alkylene glycol or polyoxyalkylene glycol unit and a vinyl ether unit in a molecule and having a molecular weight in a range of 300 to 3,000, a metal deactivator, and at least one kind phosphorous compound selected from a phosphate and a phosphite. The lubricating oil for a compression type refrigerator of the present invention has high miscibility and high viscosity index, and is excellent in anti-seizure property and corrosion stability under carbon dioxide atmosphere.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: July 23, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masato Kaneko, Harutomo Ikeda
  • Patent number: 8492485
    Abstract: Provided is a polycarbonate-based resin composition for sliding use including 0.01 to 1 part by mass of an antioxidant with respect to 100 parts by mass of a polycarbonate-polyorganosiloxane copolymer which has structural units represented by a general formula (A) and structural units represented by a general formula (B), which contains a polyorganosiloxane block moiety containing the structural units represented by the general formula (B) at a content of 1 to 30 mass %, and which has an average repetition number of the structural units represented by the general formula (B) of 110 to 1000. The polycarbonate-based resin composition for sliding use has a specific structure having improved wear resistance, in particular, improved sliding property. Also provided is a molded article using the resin composition, and excellent in wear resistance and sliding property.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: July 23, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yasuhiro Ishikawa, Eiji Tamura
  • Patent number: 8486874
    Abstract: To provide a water-soluble working fluid which less adversely affects the human body and the ecological system as compared with conventional water-soluble working fluids, which has high rotting resistance, and which provides excellent working performance. The water-soluble working fluid of the invention contains methyldicyclohexylamine.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: July 16, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Fumiaki Takagi, Masami Yamanaka, Hiroshi Kawasaki, Youichiro Jido, Takashi Urabe
  • Patent number: 8487042
    Abstract: A resin composition including the following components (A) to (C): (A) polyarylene sulfide resin: 20 wt %<component (A)?60 wt %; (B) hexagonal boron nitride: 8 wt %?component (B)?55 wt %; and (C) flat glass fiber: 15 wt % ?component (C)?55 wt % wherein the amount ratio of each component is a weight percentage relative to the total amount of the components (A) to (C).
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: July 16, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Naoto Okubo, Wataru Kosaka, Eiji Tamura
  • Patent number: 8486871
    Abstract: A lubricating oil for a compression-type refrigerator using a hydrofluorocarbon refrigerant including a polyvinyl ether-based compound containing in the molecule an alkylene glycol unit or a polyoxyalkylene glycol unit and a polyvinyl ether unit and having a molecular weight in the range of 300 to 3,000, and a refrigeration apparatus using the lubricating oil. The present invention can provide a lubricating oil for a compression-type refrigerator having good compatibility in the atmosphere of a hydrofluorocarbon and a high viscosity index, and a refrigeration apparatus using such a lubricating oil.
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: July 16, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Satoshi Nagao, Izumi Terada, Nobuaki Shimizu, Masato Kaneko
  • Publication number: 20130174910
    Abstract: An indenoperylene derivative represented by a formula (A-1), wherein in the formula (A-1), at least one of R1 to R16 is an amino group represented by the formula (A-2). In the formula (A-2), Ra and Rb are a substituted or unsubstituted aryl group having 6 to 40 ring carbon atoms or a substituted or unsubstituted alkyl group having 1 to 40 carbon atoms.
    Type: Application
    Filed: July 27, 2011
    Publication date: July 11, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Keiichi Yasukawa, Shintaro Iwamoto, Hidetsugu Ikeda, Hiroshi Tokailin
  • Patent number: 8480919
    Abstract: A lubricating oil composition for refrigerators including (A) a base oil containing as a main component a polyol ester compound obtained from a polyhydric alcohol selected from among pentaerythritol, dipentaerythritol, trimethylolpropane and neopentyl glycol and a C4 to C20 aliphatic monocarboxylic acid, (B) a phosphorus-based additive comprised of a phosphoric acid triester and/or a phosphorous acid triester, and (C) at least one acid scavenger selected from among glycidyl esters, glycidyl ethers and ?-olefin oxides. The lubricating oil composition is applicable to such refrigerators that use a refrigerant having a specific structure, such as an unsaturated fluorinated hydrocarbon compound, and being usable in current car air conditioner systems, and has excellent compatibility with the refrigerant, good sealing properties, capability of imparting a low coefficient of friction to sliding members and, yet, excellent stability.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: July 9, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masato Kaneko, Harutomo Ikeda
  • Patent number: 8481177
    Abstract: An organic electroluminescence device including an indenofluorenedione derivative represented by formula (I): wherein X1 and X2, which may be the same or different, are any of specific divalent groups; R1 to R10, which may be the same or different, are a hydrogen atom, an alkyl group, and an aryl group, a heterocycle, a halogen atom, a fluoroalkyl group, an alkoxy group, an aryloxy group or a cyano group; and R3 to R6 or R7 to R10 may be bonded to each other to form a ring.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: July 9, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Hironobu Morishita
  • Patent number: 8476823
    Abstract: An organic electroluminescence device including at least an anode, an emitting layer, an electron-transporting region and a cathode in sequential order, wherein the emitting layer contains a host and a dopant which gives fluorescent emission of which the main peak wavelength is 550 nm or less; the affinity Ad of the dopant is equal to or larger than the affinity Ah of the host; the triplet energy ETd of the dopant is larger than the triplet energy ETh of the host; and a blocking layer is provided within the electron-transporting region such that it is adjacent to the emitting layer, and the triplet energy ETb of the blocking layer is larger than ETh.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: July 2, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hitoshi Kuma, Yuichiro Kawamura, Yukitoshi Jinde, Toshinari Ogiwara, Chishio Hosokawa
  • Publication number: 20130161591
    Abstract: A material for an organic electroluminescence device including at least one of compounds shown by the following formula (Ia), (Ib), (IIa), (IIb), (III), (IVa) or (IVb):
    Type: Application
    Filed: November 12, 2012
    Publication date: June 27, 2013
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventor: Idemitsu Kosan Co., Ltd.
  • Patent number: 8470455
    Abstract: An organic EL device 100 including a plurality of emitting layers (15) and (17) between a cathode (18) and (19) and an anode (12), each of the emitting layers (15) and (17) made of a host material having a triplet energy gap of 2.52 eV or more and 3.7 eV or less, and a dopant having a light emitting property related to a triplet state, the dopant containing a metal complex with a heavy metal.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: June 25, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masahide Matsuura, Chishio Hosokawa, Toshihiro Iwakuma, Keiko Yamamichi
  • Patent number: 8470957
    Abstract: A dihydric phenol compound represented by the following formula (2), a phosgene compound, and an aliphatic tertiary amine are mixed together using a hydrophobic organic solvent to produce bischloroformate that is represented by the following formula (1) and has an average number of repeating units (n) of 1.99 or less. In the formulae (1) and (2), Ar is a divalent aromatic group.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: June 25, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Takaaki Hikosaka, Hideyuki Miyamoto, Hiroichi Hokari, Chikayuki Chiba, Hitoshi Takemoto
  • Patent number: 8471008
    Abstract: A material for organic electroluminescence devices for use as a host material in combination with at least one phosphorescent metal complex, which comprises a compound having a specific heterocyclic structure, is described. Also described is an organic electroluminescence device having an anode, a cathode and an organic thin film layer having one or more layers. The organic thin film layer is interposed between the anode and cathode and has a light emitting layer containing a host material in combination with at least one phosphorescent metal complex. At least one layer of the organic thin film layer contains the material for organic electroluminescence devices. The material for organic electroluminescence devices provides an organic electroluminescence device which has a high emitting efficiency, causes little pixel defects, is excellent in heat resistance, and show a long lifetime.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: June 25, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Toshihiro Iwakuma, Jun Endo, Masaki Numata, Kenichi Fukuoka
  • Patent number: 8471789
    Abstract: In an organic electroluminescence display device (30) comprising an organic EL element (26) having a structure wherein an organic luminescent medium (24) is sandwiched between a top electrode (20) and a bottom electrode (22), and a driving circuit (14) for driving the organic EL element (26), the organic luminescent medium (24) comprises a host compound and a triplet-related luminous compound and the driving circuit (14) applies a electric pulse voltage or pulse current having a frequency of 30 Hz or more and a duty ratio of 1/5 or less. In this way, it is possible to provide an organic EL display device which consumes a low electric power and has a long luminous life span, and a method for driving the same.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: June 25, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masahide Matsuura, Chishio Hosokawa