Patents by Inventor Takao Takiguchi

Takao Takiguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150076478
    Abstract: A metal coordination compound represented by any one of formulas (1)-(5). An organic luminescence device including an anode, a cathode, and an organic layer, which contains the metal coordination compound, disposed between the anode and the cathode.
    Type: Application
    Filed: November 6, 2014
    Publication date: March 19, 2015
    Inventors: Jun Kamatani, Shinjiro Okada, Akira Tsuboyama, Takao Takiguchi, Seishi Miura, Koji Noguchi, Takashi Moriyama, Satoshi Igawa, Manabu Furugori
  • Patent number: 8920943
    Abstract: A metal coordination compound represented by the formula: An organic luminescence device including an anode, a cathode, and an organic layer, which contains the metal coordination compound, disposed between the anode and the cathode.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: December 30, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun Kamatani, Shinjiro Okada, Akira Tsuboyama, Takao Takiguchi, Seishi Miura, Koji Noguchi, Takashi Moriyama, Satoshi Igawa, Manabu Furugori
  • Patent number: 8808875
    Abstract: The present invention provides a high-performance organic EL device and a novel compound used for the device. The novel compound of the present invention is a fluoranthene compound having the following general formula (2): The organic EL device of the present invention is an organic EL device comprising: an anode; a cathode; and an organic compound layer interposed between the anode and the cathode, wherein the organic compound layer has the fluoranthene compound.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: August 19, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun Kamatani, Shinjiro Okada, Takao Takiguchi, Akihito Saitoh, Keiji Okinaka, Satoshi Igawa, Naoki Yamada, Masashi Hashimoto
  • Patent number: 8481175
    Abstract: An oligofluorene compound is represented by the General Formula (1) below wherein in Formula (1) P1 represents a hydrogen atom, a halogen atom, or a linear or branched alkyl group having 1 to 20 carbon atoms; P2 represents a hydrogen atom, a halogen atom, a substituted or unsubstituted linear or branched alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted 2-naphthyl group; R1 and R2 each represent a hydrogen atom, a halogen atom, or a linear or branched alkyl group having 1 to 20 carbon atoms; and n represents integer of 2 to 4.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: July 9, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryota Ooishi, Takao Takiguchi, Jun Kamatani, Tetsuya Kosuge, Shigemoto Abe
  • Patent number: 8384286
    Abstract: A novel mono(benzo[k]fluoranthene) compound having a molecular structure containing at least one condensed ring aromatic group which is tricyclic or more at any of 7- to 9-positions of benzo[k]fluoranthene. Also an organic light emitting device including at least a pair of electrodes formed of an anode and a cathode, and a layer formed of an organic compound, the layer being interposed between the pair of electrodes, in which the layer formed of an organic compound contains a compound represented by the following structural formula. An organic light emitting device in which the layer is a light emitting layer.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: February 26, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Igawa, Shinjiro Okada, Jun Kamatani, Naoki Yamada, Masashi Hashimoto, Keiji Okinaka, Chika Nishi, Akihito Saitoh, Takao Takiguchi
  • Patent number: 8318321
    Abstract: There are provided a compound represented by the general formula (1) and an organic light-emitting device which comprises the compound and has an optical output with remarkably high efficiency and high luminance.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: November 27, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Igawa, Shinjiro Okada, Takao Takiguchi, Keiji Okinaka, Naoki Yamada, Masashi Hashimoto
  • Patent number: 8318395
    Abstract: Provided is a novel dibenzo[a,c]anthracene compound having substituents, which can be used in an organic light emitting device.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: November 27, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihito Saitoh, Keiji Okinaka, Satoshi Igawa, Jun Kamatani, Naoki Yamada, Masashi Hashimoto, Masanori Muratsubaki, Takao Takiguchi, Akihiro Senoo, Shinjiro Okada, Minako Nakasu
  • Patent number: 8288017
    Abstract: There are provided a novel fused ring aromatic compound and an organic light-emitting device which has an optical output with extremely high efficiency and luminance, and also has extremely high durability. The organic light-emitting device includes an anode, a cathode, and a layer including an organic compound interposed between the anode and the cathode, wherein the layer comprises a fused ring aromatic compound represented by the general formula (I): wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, and R16 each represent, independently of one another, a hydrogen atom, an alkyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted amino group, or a halogen atom.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: October 16, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Igawa, Masashi Hashimoto, Shinjiro Okada, Takao Takiguchi, Keiji Okinaka
  • Patent number: 8283053
    Abstract: To provide a high-performance organic light emitting device and a novel compound possessed by the device. Provided are a novel fluoranthene derivative and an organic light emitting compound having the derivative.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: October 9, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masashi Hashimoto, Akihito Saitoh, Naoki Yamada, Satoshi Igawa, Jun Kamatani, Takao Takiguchi, Shinjiro Okada
  • Patent number: 8268455
    Abstract: A light-emitting device is provided which uses an organic compound to emit light with high luminance and extremely high efficiency. The organic compound is composed of a metal complex having monovalent bidentate ligands. The light-emitting device includes a pair of electrodes which are an anode and a cathode, and plural organic compound layers interposed between the electrodes, in which at least one layer of the organic compound layers contains a metal complex represented by the following structural formula. The light-emitting device is an organic electroluminescent device using the light-emitting device in which the layer including the organic compound is a light-emitting layer.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: September 18, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun Kamatani, Ryota Ooishi, Shinjiro Okada, Takao Takiguchi
  • Publication number: 20120168739
    Abstract: Provided is a novel fluorene compound, which is represented by the following general formula (1):
    Type: Application
    Filed: March 8, 2012
    Publication date: July 5, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: JUN KAMATANI, SHINJIRO OKADA, TAKAO TAKIGUCHI, SATOSHI IGAWA, MASASHI HASHIMOTO, MINAKO NAKASU, RYOTA OOISHI
  • Patent number: 8158835
    Abstract: Provided is a novel fluorene compound, which is represented by the following general formula (1):
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: April 17, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun Kamatani, Shinjiro Okada, Takao Takiguchi, Satoshi Igawa, Masashi Hashimoto, Minako Nakasu, Ryota Ooishi
  • Patent number: 8147988
    Abstract: A platinum complex is represented by General Formula (1) below. In Formula (1), Pt represents a tetravalent platinum atom. The ring structure A represents a cyclic substituent having a carbon atom that forms a covalent bond with Pt. The ring structure B represents a cyclic substituent having Q that forms a coordination bond with Pt, where Q is a carbon atom, a nitrogen atom, or a phosphorous atom. X1 represents a monovalent-bidentate ligand, and X2 represents a divalent-bidentate ligand.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: April 3, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masashi Hashimoto, Satoshi Igawa, Takao Takiguchi, Shinjiro Okada
  • Publication number: 20120056172
    Abstract: There is provided a green-light-emitting device which has a high emission efficiency and a long continuous operational life, and which includes a pair of electrodes including an anode and a cathode; and a layer including an organic compound disposed between the pair of electrodes, wherein the layer includes a first compound represented by the general formula (I): wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, and R16 each represent, independently of one another, a hydrogen atom, an alkyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted amino group, or a halogen atom; and a second compound with a pyrene skeleton or a fluorene skeleton having an energy gap larger than an energy gap of the first compound.
    Type: Application
    Filed: November 17, 2011
    Publication date: March 8, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Satoshi Igawa, Masashi Hashimoto, Shinjiro Okada, Takao Takiguchi, Keiji Okinaka
  • Publication number: 20120043535
    Abstract: A novel mono(benzo[k]fluoranthene) compound having a molecular structure containing at least one condensed ring aromatic group which is tricyclic or more at any of 7- to 9-positions of benzo[k]fluoranthene. Also an organic light emitting device including at least a pair of electrodes formed of an anode and a cathode, and a layer formed of an organic compound, the layer being interposed between the pair of electrodes, in which the layer formed of an organic compound contains a compound represented by the following structural formula. An organic light emitting device in which the layer is a light emitting layer.
    Type: Application
    Filed: November 3, 2011
    Publication date: February 23, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Satoshi Igawa, Shinjiro Okada, Jun Kamatani, Naoki Yamada, Masashi Hashimoto, Keiji Okinaka, Chika Negishi, Akihito Saitoh, Takao Takiguchi
  • Patent number: 8084147
    Abstract: There is provided a green-light-emitting device which has a high emission efficiency and a long continuous operational life, and which includes a pair of electrodes including an anode and a cathode; and a layer including an organic compound disposed between the pair of electrodes, wherein the layer includes a first compound represented by the general formula (I): wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, and R16 each represent, independently of one another, a hydrogen atom, an alkyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted amino group, or a halogen atom; and a second compound with a pyrene skeleton or a fluorene skeleton having an energy gap larger than an energy gap of the first compound.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: December 27, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Igawa, Masashi Hashimoto, Shinjiro Okada, Takao Takiguchi, Keiji Okinaka
  • Patent number: 8072136
    Abstract: A novel mono(benzo[k]fluoranthene) compound having a molecular structure containing at least one condensed ring aromatic group which is tricyclic or more at any of 7- to 9-positions of benzo[k]fluoranthene. Also an organic light emitting device including at least a pair of electrodes formed of an anode and a cathode, and a layer formed of an organic compound, the layer being interposed between the pair of electrodes, in which the layer formed of an organic compound contains a compound represented by the following structural formula. An organic light emitting device in which the layer is a light emitting layer.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: December 6, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Igawa, Shinjiro Okada, Jun Kamatani, Naoki Yamada, Masashi Hashimoto, Keiji Okinaka, Chika Negishi, Akihito Saitoh, Takao Takiguchi
  • Patent number: 8034464
    Abstract: A fluorene derivative represented by the following structural formula. An organic electroluminescence device including a pair of electrodes, and at least one layer containing an organic compound interposed between the pair of the electrodes. The at least one layer containing the organic compound contains the fluorene derivative. The layer containing the fluorene derivative serves as a light-emitting layer.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: October 11, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Igawa, Shinjiro Okada, Takao Takiguchi, Masashi Hashimoto, Naoki Yamada
  • Patent number: 8026664
    Abstract: To provide a novel fluoranthene derivative and an organic light emitting device having the fluoranthene derivative.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: September 27, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihito Saitoh, Keiji Okinaka, Satoshi Igawa, Jun Kamatani, Naoki Yamada, Masashi Hashimoto, Masanori Muratsubaki, Takao Takiguchi, Akihiro Senoo, Shinjiro Okada, Minako Nakasu
  • Patent number: 8021766
    Abstract: To provide an organic light emitting device with high color purity, high efficiency, high luminance, and a long life, the organic light emitting device includes: a pair of electrodes having an anode and a cathode, and at least one layer containing an organic compound sandwiched between the pair of electrodes, at least one of the anode and the cathode being transparent or translucent, in which at least one layer containing an organic compound contains at least one kind of the benzo(ghi)fluoranthene derivative represented by the following General Formula (1) or (2).
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: September 20, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanori Muratsubaki, Akihito Saitoh, Satoshi Igawa, Takao Takiguchi, Shinjiro Okada