Patents by Inventor Sayaka Mizutani

Sayaka Mizutani 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: 10573823
    Abstract: An organic electroluminescence device including: an anode; a cathode; two or more emitting units that are disposed between the anode and the cathode, each unit having an emitting layer; and a charge-generating layer that is disposed between the emitting units, wherein the charge-generating layer includes an N layer nearer to the anode and a P layer nearer to the cathode, and the N layer includes a compound represented by the following formula (I) or (II):
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: February 25, 2020
    Assignee: JOLED INC
    Inventors: Emiko Kambe, Masato Nakamura, Masakazu Funahashi, Hiroshi Yamamoto, Sayaka Mizutani
  • Patent number: 10510964
    Abstract: A compound is represented by a formula (1) below. In the formula (1), X1 to X8 each independently represent a carbon atom to be bonded to a group represented by the following formula (20), CRX or a nitrogen atom. At least one of X1 to X8 is a carbon atom to be bonded to the group represented by the following formula (2). RX is each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or the like.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: December 17, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Sayaka Mizutani, Takayasu Sado
  • Publication number: 20190348615
    Abstract: An organic EL device includes an anode, an emitting layer, an electron transporting zone and a cathode in this sequence, in which the electron transporting zone contains an aromatic heterocyclic derivative represented by a formula (1) below. In the formula (1), X1 to X3 are a nitrogen atom or CR1, and A is represented by a formula (2) below. In the formula (2), L1 is s single bond or a linking group, and HAr is represented by a formula (3) below. In the formula (3), Y1 is an oxygen atom, a sulfur atom or the like, and one of X11 to X18 is a carbon atom bonded to L1 by a single bond and the rest of X11 to X18 are a nitrogen atom or CR13.
    Type: Application
    Filed: July 26, 2019
    Publication date: November 14, 2019
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Sayaka MIZUTANI, Takayasu SADO
  • Patent number: 10418563
    Abstract: An organic EL device includes an anode, an emitting layer, an electron transporting zone and a cathode in this sequence, in which the electron transporting zone contains an aromatic heterocyclic derivative represented by a formula (1) below. In the formula (1), X1 to X3 are a nitrogen atom or CR1, and A is represented by a formula (2) below. In the formula (2), L1 is s single bond or a linking group, and HAr is represented by a formula (3) below. In the formula (3), Y1 is an oxygen atom, a sulfur atom or the like, and one of X11 to X18 is a carbon atom bonded to L1 by a single bond and the rest of X11 to X18 are a nitrogen atom or CR13.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: September 17, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Sayaka Mizutani, Takayasu Sado
  • Patent number: 10199580
    Abstract: An organic EL device includes an anode, an emitting layer, an electron transporting zone and a cathode in this sequence, in which the electron transporting zone contains an aromatic heterocyclic derivative represented by a formula (1) below. In the formula (1), X1 to X3 are a nitrogen atom or CR1, and A is represented by a formula (2) below. In the formula (2), L1 is s single bond or a linking group, and HAr is represented by a formula (3) below.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: February 5, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Sayaka Mizutani, Takayasu Sado
  • Publication number: 20180331299
    Abstract: An organic EL device includes an anode, an emitting layer, an electron transporting zone and a cathode in this sequence, in which the electron transporting zone contains an aromatic heterocyclic derivative represented by a formula (1) below. In the formula (1), X1 to X3 are a nitrogen atom or CR1, and A is represented by a formula (2) below. In the formula (2), L1 is s single bond or a linking group, and HAr is represented by a formula (3) below. In the formula (3), Y1 is an oxygen atom, a sulfur atom or the like, and one of X11 to X18 is a carbon atom bonded to L1 by a single bond and the rest of X11 to X18 are a nitrogen atom or CR13.
    Type: Application
    Filed: July 19, 2018
    Publication date: November 15, 2018
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Sayaka MIZUTANI, Takayasu SADO
  • Patent number: 9978975
    Abstract: An organic electroluminescence device including: an anode; one or more organic thin film layers including an emitting layer; a donor-containing layer; an acceptor-containing layer; and a light-transmissive cathode in this order, wherein the donor-containing layer comprises a compound represented by the following formula (I) or (II):
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: May 22, 2018
    Assignee: JOLED INC
    Inventors: Emiko Kambe, Masato Nakamura, Masakazu Funahashi, Hiroshi Yamamoto, Sayaka Mizutani
  • Publication number: 20180102484
    Abstract: A compound is represented by a formula (1) below. In the formula (1), X1 to X8 each independently represent a carbon atom to be bonded to a group represented by the following formula (20), CRX or a nitrogen atom. At least one of X1 to X8 is a carbon atom to be bonded to the group represented by the following formula (2). RX is each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or the like.
    Type: Application
    Filed: December 7, 2017
    Publication date: April 12, 2018
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Sayaka MIZUTANI, Takayasu Sado
  • Publication number: 20180102485
    Abstract: An organic EL device includes an anode, an emitting layer, an electron transporting zone and a cathode in this sequence, in which the electron transporting zone contains an aromatic heterocyclic derivative represented by a formula (1) below. In the formula (1), X1 to X3 are a nitrogen atom or CR1, and A is represented by a formula (2) below. In the formula (2), L1 is s single bond or a linking group, and HAr is represented by a formula (3) below. In the formula (3), Y1 is an oxygen atom, a sulfur atom or the like, and one of X11 to X18 is a carbon atom bonded to L1 by a single bond and the rest of X11 to X18 are a nitrogen atom or CR13.
    Type: Application
    Filed: December 13, 2017
    Publication date: April 12, 2018
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Sayaka MIZUTANI, Takayasu Sado
  • Patent number: 9923146
    Abstract: An aromatic amine derivative represented by the following formula (1): wherein at least one of R1 to R8 is a group other than a hydrogen atom, Ar1 to Ar4 are a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: March 20, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko Mizuki, Masahiro Kawamura, Sayaka Mizutani
  • Patent number: 9893296
    Abstract: An organic EL device includes an anode, an emitting layer, an electron transporting zone and a cathode in this sequence, in which the electron transporting zone contains an aromatic heterocyclic derivative represented by a formula (1) below. In the formula (1), X1 to X3 are a nitrogen atom or CR1, and A is represented by a formula (2) below. In the formula (2), L1 is s single bond or a linking group, and HAr is represented by a formula (3) below. In the formula (3), Y1 is an oxygen atom, a sulfur atom or the like, and one of X11 to X18 is a carbon atom bonded to L1 by a single bond and the rest of X11 to X18 are a nitrogen atom or CR13.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: February 13, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Sayaka Mizutani, Takayasu Sado
  • Patent number: 9871206
    Abstract: A compound is represented by a formula (1) below. In the formula (1), X1 to X8 each independently represent a carbon atom to be bonded to a group represented by the following formula (20), CRX or a nitrogen atom. At least one of X1 to X8 is a carbon atom to be bonded to the group represented by the following formula (2). RX is each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or the like.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: January 16, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Sayaka Mizutani, Takayasu Sado
  • Patent number: 9847501
    Abstract: An aromatic heterocyclic derivative is represented by a formula (1) below. In the formula (1), X1 to X3 each are a nitrogen atom or CR1, with a proviso that at least one of X1 to X3 is a nitrogen atom. A is represented by a formula (2) and B is represented by a formula (4) below.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: December 19, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Sayaka Mizutani, Takayasu Sado
  • Publication number: 20170309822
    Abstract: An aromatic amine derivative represented by the following formula (1): wherein at least one of R1 to R8 is a group other than a hydrogen atom, Ar1 to Ar4 are a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms.
    Type: Application
    Filed: July 7, 2017
    Publication date: October 26, 2017
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko MIZUKI, Masahiro KAWAMURA, Sayaka MIZUTANI
  • Patent number: 9748496
    Abstract: A specific nitrogen-containing heterocyclic compound having a urea structure, an electron transporting material containing the nitrogen-containing heterocyclic compound, and an organic electroluminescence device including a light emitting layer and an electron transporting layer between a cathode and an anode in which the electron transporting layer includes the electron transporting material or the nitrogen-containing heterocyclic derivative. An organic EL device exhibiting high emission efficiency even at low voltage and a material for organic EL devices are described.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: August 29, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Sayaka Mizutani, Takayasu Sado, Hiroki Ishida
  • Patent number: 9559311
    Abstract: An anthracene derivative is represented by a formula (1) below, in which at least one of Ar1, Ar2, Ar3, L1, L2 and L3 is a group derived from a skeleton represented by a formula (10) below,
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: January 31, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Sayaka Mizutani, Takayasu Sado
  • Publication number: 20160254459
    Abstract: An organic electroluminescence device that includes an anode, an emitting layer that includes a host and a fluorescent dopant, an electron transporting zone, a cathode, a blocking layer adjacent to the emitting layer in the electron transporting zone where the blocking layer includes an aromatic heterocyclic derivative with an azine ring and where the triplet energy ETb (eV) of the aromatic heterocyclic derivative is larger than a triplet energy ETh (eV) of the host.
    Type: Application
    Filed: March 18, 2016
    Publication date: September 1, 2016
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yuichiro KAWAMURA, Hiroyuki SAITO, Hitoshi KUMA, Masahiro KAWAMURA, Yukitoshi JINDE, Hirokatsu ITO, Takayasu SADO, Sayaka MIZUTANI
  • Patent number: 9397307
    Abstract: An organic electroluminescence device includes: a cathode; an anode; and an organic layer having one or more layers and provided between the anode and the cathode, in which the organic layer includes an emitting layer, and the emitting layer includes a first host material, a second host material and a phosphorescent dopant material. The first host material is a compound represented by a formula (1) below. The second host material is a compound represented by a formula (4) below.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: July 19, 2016
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Kazuki Nishimura, Sayaka Mizutani
  • Publication number: 20160197289
    Abstract: An organic electroluminescence device includes: an anode; a cathode opposite the anode; and an organic layer interposed between the anode and the cathode, in which the organic layer includes: an emitting layer; and a first electron transporting layer and a second electron transporting layer which are provided on a side of the emitting layer near the cathode. The first electron transporting layer includes a compound represented by a formula (1) below, and the second electron transporting layer includes a compound represented by a formula (2) below.
    Type: Application
    Filed: October 8, 2013
    Publication date: July 7, 2016
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Takayasu SADO, Sayaka MIZUTANI
  • Patent number: RE47763
    Abstract: An organic electroluminescence device includes: a cathode; an anode; and an organic layer having one or more layers and provided between the anode and the cathode, in which the organic layer includes an emitting layer, and the emitting layer includes a first host material, a second host material and a phosphorescent dopant material. The first host material is a compound represented by a formula (1) below. The second host material is a compound represented by a formula (4) below.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: December 10, 2019
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuki Nishimura, Sayaka Mizutani