Patents by Inventor Hidetsugu Ikeda

Hidetsugu Ikeda 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: 8785006
    Abstract: An anthracene derivative having a specific asymmetric structure is provided. The asymmetric anthracenes are useful in an organic electroluminescence device and exhibit efficient light emission and a long performance lifetime.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: July 22, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hidetsugu Ikeda, Motohisa Ido, Masakazu Funahashi
  • Patent number: 8766243
    Abstract: A compound represented by the following formula (I), provided that the compound in which all of R1 to R14 are hydrogen atoms is excluded.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: July 1, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yoichi Ikeda, Masatoshi Saito, Hidetsugu Ikeda, Hiroaki Nakamura, Hirofumi Kondo, Naoki Kurihara, Kota Terai
  • Patent number: 8759590
    Abstract: A specified indenopyrene compound containing a disubstituted amino group substituted with a group having a carbon number of from 1 to 40, which is a useful indenopyrene compound as an organic electronics material, and in particular, an indenopyrene compound which when used for organic thin film solar cells, displays a photoelectric conversion characteristic with high efficiency, is provided.
    Type: Grant
    Filed: October 4, 2009
    Date of Patent: June 24, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hidetsugu Ikeda, Ryoji Maeda, Masahide Matsuura
  • Patent number: 8741450
    Abstract: A material for organic electroluminescence devices comprising a compound in which a heterocyclic group having nitrogen is bonded to an arylcarbazolyl group or a carbazolylalkylene group and an organic electroluminescence device comprising an anode, a cathode and an organic thin film layer comprising at least one layer and disposed between the anode and the cathode, wherein at least one layer in the organic thin film layer comprises the material for organic electroluminescence devices described above. The material can provide an organic electroluminescence device emitting bluish light with a high purity of color. The organic electroluminescence device uses the material.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: June 3, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Toshihiro Iwakuma, Hiroshi Yamamoto, Yoshio Hironaka, Hidetsugu Ikeda, Chishio Hosokawa, Seiji Tomita, Takashi Arakane
  • Patent number: 8685543
    Abstract: A material for electroluminescent devices which comprises a compound in which a heterocyclic group having nitrogen is bonded to carbazolyl group and an organic electroluminescent device having at least one organic thin film layer which is sandwiched between the cathode and the anode and contains the above material in at least one layer, are provided. The material can provide organic electroluminescent devices emitting bluish light with a high purity of color. The organic electroluminescence device uses the material.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: April 1, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Toshihiro Iwakuma, Chishio Hosokawa, Hidetsugu Ikeda, Seiji Tomita, Takashi Arakane
  • Publication number: 20140061616
    Abstract: An organic semiconductor material is represented by the following formula (1), wherein two or more of R1 to R6 are an alkyl group.
    Type: Application
    Filed: December 23, 2011
    Publication date: March 6, 2014
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Misa Sunagawa, Masatoshi Saito, Hidetsugu Ikeda, Yoichi Ikeda, Hirofumi Kondo, Kota Terai
  • 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
  • Publication number: 20140001460
    Abstract: A material for electroluminescent devices which comprises a compound in which a heterocyclic group having nitrogen is bonded to carbazolyl group and an organic electroluminescent device having at least one organic thin film layer which is sandwiched between the cathode and the anode and contains the above material in at least one layer, are provided. The material can provide organic electroluminescent devices emitting bluish light with a high purity of color. The organic electroluminescence device uses the material.
    Type: Application
    Filed: August 30, 2013
    Publication date: January 2, 2014
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Toshihiro IWAKUMA, Chishio HOSOKAWA, Hidetsugu IKEDA, Seiji TOMITA, Takashi ARAKANE
  • Patent number: 8580391
    Abstract: A material for organic electroluminescence devices comprising a compound in which a heterocyclic group having nitrogen is bonded to an arylcarbazolyl group or a carbazolylalkylene group and an organic electroluminescence device comprising an anode, a cathode and an organic thin film layer comprising at least one layer and disposed between the anode and the cathode, wherein at least one layer in the organic thin film layer comprises the material for organic electroluminescence devices described above. The material can provide an organic electro-luminescence device emitting bluish light with a high purity of color. The organic electroluminescence device uses the material.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: November 12, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Toshihiro Iwakuma, Hiroshi Yamamoto, Yoshio Hironaka, Hidetsugu Ikeda, Chishio Hosokawa, Seiji Tomita, Takashi Arakane
  • Patent number: 8580398
    Abstract: A material for electroluminescent devices which comprises a compound in which a heterocyclic group having nitrogen is bonded to carbazolyl group and an organic electroluminescent device having at least one organic thin film layer which is sandwiched between the cathode and the anode and contains the above material in at least one layer, are provided. The material can provide organic electroluminescent devices emitting bluish light with a high purity of color. The organic electroluminescence device uses the material.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: November 12, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Toshihiro Iwakuma, Chishio Hosokawa, Hidetsugu Ikeda, Seiji Tomita, Takashi Arakane
  • Patent number: 8563145
    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: Grant
    Filed: May 29, 2007
    Date of Patent: October 22, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Toshihiro Iwakuma, Masahide Matsuura, Yuki Nakano, Hidetsugu Ikeda
  • 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: 8377575
    Abstract: An organic electroluminescent device (1) including an anode (2), a cathode (6), and at least a first layer (3), a second layer (4), and a third layer (5) provided between the anode (2) and the cathode (6) in that order from the anode side. At least one of the first to third layers (3), (4), and (5) includes a phosphorescent compound. At least one of the first to third layers (3), (4), and (5) is an emitting layer. At least three compounds respectively forming the first layer (3), the second layer (4), and the third layer (5) other than the phosphorescent compound are compounds of the following formula (1). wherein R1 to R7 each represent a hydrogen atom or a substituent, provided that adjacent substituents may form a ring.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: February 19, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Toshihiro Iwakuma, Masahide Matsuura, Hideaki Nagashima, Hidetsugu Ikeda, Hiroaki Nakamura, Tadashi Kusumoto
  • Publication number: 20120319099
    Abstract: A material for organic electroluminescence devices comprising a compound in which a heterocyclic group having nitrogen is bonded to an arylcarbazolyl group or a carbazolylalkylene group and an organic electroluminescence device comprising an anode, a cathode and an organic thin film layer comprising at least one layer and disposed between the anode and the cathode, wherein at least one layer in the organic thin film layer comprises the material for organic electroluminescence devices described above. The material can provide an organic electro-luminescence device emitting bluish light with a high purity of color. The organic electroluminescence device uses the material.
    Type: Application
    Filed: August 31, 2012
    Publication date: December 20, 2012
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Toshihiro IWAKUMA, Hiroshi Yamamoto, Yoshio Hironaka, Hidetsugu Ikeda, Chishio Hosokawa, Seiji Tomita, Takashi Arakane
  • Publication number: 20120298203
    Abstract: A dibenzofluoranthene compound represented by the following formula (A). In the formula at least one of R1 to R14 is an amino group represented by the following formula (S); R1 to R14 that is not an amino group represented by the formula (S) are independently a hydrogen atom, a C1-C40 substituted or unsubstituted alkyl group, a C2-C40 substituted or unsubstituted alkenyl group, a C2-C40 substituted or unsubstituted alkynyl group, a C6-C40 substituted or unsubstituted aryl group, a C3-C40 substituted or unsubstituted heteroaryl group, a C1-C40 substituted or unsubstituted alkoxy group or a C6-C40 substituted or unsubstituted aryloxy group. In the formula (S), Ra and Rb are independently a C6-C40 substituted or unsubstituted aryl group or a C1-C40 substituted or unsubstituted alkyl group; and Ra and Rb may combine with each other to form a ring.
    Type: Application
    Filed: January 26, 2011
    Publication date: November 29, 2012
    Inventors: Hidetsugu Ikeda, Masahide Matsuura
  • Publication number: 20120298975
    Abstract: A material for organic electroluminescence devices comprising a compound in which a heterocyclic group having nitrogen is bonded to an arylcarbazolyl group or a carbazolylalkylene group and an organic electroluminescence device comprising an anode, a cathode and an organic thin film layer comprising at least one layer and disposed between the anode and the cathode, wherein at least one layer in the organic thin film layer comprises the material for organic electroluminescence devices described above. The material can provide an organic electroluminescence device emitting bluish light with a high purity of color. The organic electroluminescence device uses the material.
    Type: Application
    Filed: May 31, 2012
    Publication date: November 29, 2012
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Toshihiro IWAKUMA, Hiroshi Yamamoto, Yoshio Hironaka, Hidetsugu Ikeda, Chishio Hosokawa, Seiji Tomita, Takashi Arakane
  • Patent number: 8318324
    Abstract: An anthracene derivative having a specific asymmetric structure is provided. The asymmetric anthracenes are useful in an organic electroluminescence device and exhibit efficient light emission and a long performance lifetime.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: November 27, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hidetsugu Ikeda, Motohisa Ido, Masakazu Funahashi
  • Publication number: 20120273768
    Abstract: A compound represented by the following formula (I), provided that the compound in which all of R1 to R14 are hydrogen atoms is excluded.
    Type: Application
    Filed: November 2, 2010
    Publication date: November 1, 2012
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yoichi Ikeda, Masatoshi Saito, Hidetsugu Ikeda, Hiroaki Nakamura, Hirofumi Kondo, Naoki Kurihara, Kota Terai
  • Publication number: 20120235561
    Abstract: An anthracene derivative having a specific asymmetric structure is provided. The asymmetric anthracenes are useful in an organic electroluminescence device and exhibit efficient light emission and a long performance lifetime.
    Type: Application
    Filed: May 29, 2012
    Publication date: September 20, 2012
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Hidetsugu IKEDA, Motohisa IDO, Masakazu FUNAHASHI
  • Publication number: 20120235129
    Abstract: A material for electroluminescent devices which comprises a compound in which a heterocyclic group having nitrogen is bonded to carbazolyl group and an organic electroluminescent device having at least one organic thin film layer which is sandwiched between the cathode and the anode and contains the above material in at least one layer, are provided. The material can provide organic electroluminescent devices emitting bluish light with a high purity of color. The organic electroluminescence device uses the material.
    Type: Application
    Filed: May 31, 2012
    Publication date: September 20, 2012
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Toshihiro IWAKUMA, Chishio Hosokawa, Hidetsugu Ikeda, Seiji Tomita, Takashi Arakane