Patents by Inventor Mineyuki Kubota

Mineyuki Kubota 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).

  • Patent number: 10205101
    Abstract: Disclosed is a light-emitting material for organic electroluminescent (EL) devices which is composed of an asymmetric anthracene derivative of a specific structure. Also disclosed are a material for organic EL devices and an organic EL device wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. At least one layer composed of the organic thin film layer contains the material for organic EL devices by itself or as a component of a mixture. Consequently, the organic EL device has a high efficiency and a long life. Also disclosed are a light-emitting material for organic EL devices and material for organic devices which enable to realize such an organic EL device.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: February 12, 2019
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki Kubota, Masakazu Funahashi, Chishio Hosokawa
  • Publication number: 20180342681
    Abstract: Disclosed is a light-emitting material for organic electroluminescent (EL) devices which is composed of an asymmetric anthracene derivative of a specific structure. Also disclosed are a material for organic EL devices and an organic EL device wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. At least one layer composed of the organic thin film layer contains the material for organic EL devices by itself or as a component of a mixture. Consequently, the organic EL device has a high efficiency and a long life. Also disclosed are a light-emitting material for organic EL devices and material for organic devices which enable to realize such an organic EL device.
    Type: Application
    Filed: August 3, 2018
    Publication date: November 29, 2018
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki KUBOTA, Masakazu FUNAHASHI, Chishio HOSOKAWA
  • Patent number: 10079344
    Abstract: Provided are an asymmetric monoanthracene derivative having a specific structure, a material for an organic EL device comprising the above asymmetric monoanthracene derivative and an organic EL device in which an organic thin film layer comprising a single layer or plural layers including a luminescent layer is interposed between a cathode and an anode, wherein at least one of the above organic thin film layers contains the asymmetric monoanthracene derivative described above in the form of a single component or a mixed component. Provided are an organic electroluminescent (EL) device having a high luminous efficiency and a long life, an asymmetric monoanthracene derivative which materializes the same and a material for an organic EL device.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: September 18, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Mineyuki Kubota, Masakazu Funahashi
  • Patent number: 10069074
    Abstract: Disclosed is a light-emitting material for organic electroluminescent (EL) devices which is composed of an asymmetric anthracene derivative of a specific structure. Also disclosed are a material for organic EL devices and an organic EL device wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. At least one layer composed of the organic thin film layer contains the material for organic EL devices by itself or as a component of a mixture. Consequently, the organic EL device has a high efficiency and a long life. Also disclosed are a light-emitting material for organic EL devices and material for organic devices which enable to realize such an organic EL device.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: September 4, 2018
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki Kubota, Masakazu Funahashi, Chishio Hosokawa
  • Publication number: 20180019404
    Abstract: Disclosed is a light-emitting material for organic electroluminescent (EL) devices which is composed of an asymmetric anthracene derivative of a specific structure. Also disclosed are a material for organic EL devices and an organic EL device wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. At least one layer composed of the organic thin film layer contains the material for organic EL devices by itself or as a component of a mixture. Consequently, the organic EL device has a high efficiency and a long life. Also disclosed are a light-emitting material for organic EL devices and material for organic devices which enable to realize such an organic EL device.
    Type: Application
    Filed: September 19, 2017
    Publication date: January 18, 2018
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki KUBOTA, Masakazu Funahashi, Chishio Hosokawa
  • Patent number: 9786846
    Abstract: Disclosed is a light-emitting material for organic electroluminescent (EL) devices which is composed of an asymmetric anthracene derivative of a specific structure. Also disclosed are a material for organic EL devices and an organic EL device wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. At least one layer composed of the organic thin film layer contains the material for organic EL devices by itself or as a component of a mixture. Consequently, the organic EL device has a high efficiency and a long life. Also disclosed are a light-emitting material for organic EL devices and material for organic devices which enable to realize such an organic EL device.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: October 10, 2017
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki Kubota, Masakazu Funahashi, Chishio Hosokawa
  • Publication number: 20160064675
    Abstract: Disclosed is a light-emitting material for organic electroluminescent (EL) devices which is composed of an asymmetric anthracene derivative of a specific structure. Also disclosed are a material for organic EL devices and an organic EL device wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. At least one layer composed of the organic thin film layer contains the material for organic EL devices by itself or as a component of a mixture. Consequently, the organic EL device has a high efficiency and a long life. Also disclosed are a light-emitting material for organic EL devices and material for organic devices which enable to realize such an organic EL device.
    Type: Application
    Filed: November 9, 2015
    Publication date: March 3, 2016
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki KUBOTA, Masakazu FUNAHASHI, Chishio HOSOKAWA
  • Patent number: 9219234
    Abstract: Disclosed is a light-emitting material for organic electroluminescent (EL) devices which is composed of an asymmetric anthracene derivative of a specific structure. Also disclosed are a material for organic EL devices and an organic EL device wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. At least one layer composed of the organic thin film layer contains the material for organic EL devices by itself or as a component of a mixture. Consequently, the organic EL device has a high efficiency and a long life. Also disclosed are a light-emitting material for organic EL devices and material for organic devices which enable to realize such an organic EL device.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: December 22, 2015
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki Kubota, Masakazu Funahashi, Chishio Hosokawa
  • Publication number: 20150287928
    Abstract: Provided are an asymmetric monoanthracene derivative having a specific structure, a material for an organic EL device comprising the above asymmetric monoanthracene derivative and an organic EL device in which an organic thin film layer comprising a single layer or plural layers including a luminescent layer is interposed between a cathode and an anode, wherein at least one of the above organic thin film layers contains the asymmetric monoanthracene derivative described above in the form of a single component or a mixed component. Provided are an organic electroluminescent (EL) device having a high luminous efficiency and a long life, an asymmetric monoanthracene derivative which materializes the same and a material for an organic EL device.
    Type: Application
    Filed: June 17, 2015
    Publication date: October 8, 2015
    Applicant: IDEMITSU KOSAN, CO. LTD.
    Inventors: Mineyuki KUBOTA, Masakazu FUNAHASHI
  • Patent number: 8853675
    Abstract: Disclosed is a light-emitting material for organic electroluminescent (EL) devices which is composed of an asymmetric anthracene derivative of a specific structure. Also disclosed are a material for organic EL devices and an organic EL device wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. At least one layer composed of the organic thin film layer contains the material for organic EL devices by itself or as a component of a mixture. Consequently, the organic EL device has a high efficiency and a long life. Also disclosed are a light-emitting material for organic EL devices and material for organic devices which enable to realize such an organic EL device.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: October 7, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki Kubota, Masakazu Funahashi, Chishio Hosokawa
  • Publication number: 20140008640
    Abstract: Provided are an asymmetric monoanthracene derivative having a specific structure, a material for an organic EL device comprising the above asymmetric monoanthracene derivative and an organic EL device in which an organic thin film layer comprising a single layer or plural layers including a luminescent layer is interposed between a cathode and an anode, wherein at least one of the above organic thin film layers contains the asymmetric monoanthracene derivative described above in the form of a single component or a mixed component. Provided are an organic electroluminescent (EL) device having a high luminous efficiency and a long life, an asymmetric monoanthracene derivative which materializes the same and a material for an organic EL device.
    Type: Application
    Filed: September 9, 2013
    Publication date: January 9, 2014
    Applicant: IDEMITSU KOSAN, CO.
    Inventors: Mineyuki KUBOTA, Masakazu Funahashi
  • Publication number: 20140008641
    Abstract: Disclosed is a light-emitting material for organic electroluminescent (EL) devices which is composed of an asymmetric anthracene derivative of a specific structure. Also disclosed are a material for organic EL devices and an organic EL device wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. At least one layer composed of the organic thin film layer contains the material for organic EL devices by itself or as a component of a mixture. Consequently, the organic EL device has a high efficiency and a long life. Also disclosed are a light-emitting material for organic EL devices and material for organic devices which enable to realize such an organic EL device.
    Type: Application
    Filed: September 11, 2013
    Publication date: January 9, 2014
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki KUBOTA, Masakazu Funahashi, Chishio Hosokawa
  • Patent number: 8568902
    Abstract: Provided are an asymmetric monoanthracene derivative having a specific structure, a material for an organic EL device comprising the above asymmetric monoanthracene derivative and an organic EL device in which an organic thin film layer comprising a single layer or plural layers including a luminescent layer is interposed between a cathode and an anode, wherein at least one of the above organic thin film layers contains the asymmetric monoanthracene derivative described above in the form of a single component or a mixed component. Provided are an organic electroluminescent (EL) device having a high luminous efficiency and a long life, an asymmetric monoanthracene derivative which materializes the same and a material for an organic EL device.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: October 29, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki Kubota, Masakazu Funahashi
  • Patent number: 8318995
    Abstract: Asymmetric pyrene derivatives having specific structure. An organic EL device comprising at least one organic thin film layer including a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, wherein the organic thin film layer comprises at least one kind selected from the aforementioned asymmetric pyrene derivatives singly or as a component of mixture thereof. An organic EL device exhibiting a great efficiency of light emission and having a long lifetime, and also asymmetric pyrene derivatives for realizing the organic EL device are provided.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: November 27, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki Kubota, Masakazu Funahashi, Chishio Hosokawa
  • Patent number: 8097349
    Abstract: A novel derivative of heterocyclic compound having nitrogen atom with a structure made by bonding special groups to benzimidazole, a material for an organic electroluminescence (EL) device comprising the derivative of heterocyclic compound having nitrogen atom and an organic electroluminescence device comprising at least one organic compound layer containing a light emitting layer sandwiched between a pair of electrodes, wherein the device contains the derivative of heterocyclic compound having nitrogen atom. An organic EL device achieving elevation of luminance and of efficiency in light emission even under low driving voltage is obtainable by an employment of the derivative of heterocyclic compound having nitrogen atom for at least one layer composing organic compound layers of the EL device.
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: January 17, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroshi Yamamoto, Masahide Matsuura, Mineyuki Kubota, Masahiro Kawamura
  • Patent number: 8058478
    Abstract: A aromatic amine derivative having an specific structure having a diphenyl amino group, and two or more of substituent bonding to benzene ring thereof, and in 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, at least one of the organic thin film layer comprises the aromatic amine derivative singly or a component for a mixture thereof. The organic electroluminescence device exhibiting a long lifetime and high current efficiency as well as emitting blue light with high color purity, and also the aromatic amine derivative for realizing the organic EL device are provided.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: November 15, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masakazu Funahashi, Mineyuki Kubota
  • Patent number: 7985491
    Abstract: An anthrylarylene derivative having a specific structure and an organic electroluminescence device comprising an organic thin film layer which comprises at least one layer comprising at least a light emitting layer and is disposed between a cathode and an anode, wherein at least one layer in the organic thin film layer comprises the anthrylarylene derivative singly or as a component of a mixture. The device exhibits a great efficiency of light emission and has a long life. The anthrylarylene derivative has a sufficient glass transition temperature and is greatly advantageous as the light emitting material used in the above organic electroluminescence device.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: July 26, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki Kubota, Masakazu Funahashi, Chishio Hosokawa
  • Publication number: 20110034733
    Abstract: A aromatic amine derivative having an specific structure having a diphenyl amino group, and two or more of substituent bonding to benzene ring thereof, and in 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, at least one of the organic thin film layer comprises the aromatic amine derivative singly or a component for a mixture thereof. The organic electroluminescence device exhibiting a long lifetime and high current efficiency as well as emitting blue light with high color purity, and also the aromatic amine derivative for realizing the organic EL device are provided.
    Type: Application
    Filed: August 11, 2010
    Publication date: February 10, 2011
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Masakazu FUNAHASHI, Mineyuki Kubota
  • Patent number: 7867629
    Abstract: A specific derivative of heterocyclic compound having nitrogen atom and an organic electroluminescence device comprising the compound. An organic electroluminescence device comprising at least one of organic compound layers including a light emitting layer sandwiched between an anode and a cathode, wherein said at least one of the organic compound layers comprises the derivative of the heterocyclic compound having nitrogen atom as a sole component or as mixed component. The organic electroluminescence device achieves elevation of luminance and excellent efficiency of light emission, and also achieves long lifetime by an improvement of an electrode adhesion.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: January 11, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroshi Yamamoto, Masahide Matsuura, Hidetsugu Ikeda, Mineyuki Kubota, Masahiro Kawamura
  • Patent number: 7851071
    Abstract: A novel derivative of heterocyclic compound having nitrogen atom with a structure made by bonding special groups to benzimidazole, a material for an organic electroluminescence (EL) device comprising the derivative of heterocyclic compound having nitrogen atom and an organic electroluminescence device comprising at least one organic compound layer containing a light emitting layer sandwiched between a pair of electrodes, wherein the device contains the derivative of heterocyclic compound having nitrogen atom. An organic EL device achieving elevation of luminance and of efficiency in light emission even under low driving voltage is obtainable by an employment of the derivative of heterocyclic compound having nitrogen atom for at least one layer composing organic compound layers of the EL device.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: December 14, 2010
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroshi Yamamoto, Masahide Matsuura, Mineyuki Kubota, Masahiro Kawamura