Patents by Inventor Masahiro Kawamura

Masahiro Kawamura 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: 20200148639
    Abstract: A compound is represented by a formula (1) below, in which k is an integer of 0 or more, m is an integer of 1 or more, n is an integer of 2 or more. L is a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 ring carbon atoms, CN is a cyano group, and D1 and D2 are each independently represented by one of a formula (2), a formula (3) and formula (3x) below, D1 and D2 being optionally mutually the same or different.
    Type: Application
    Filed: January 10, 2020
    Publication date: May 14, 2020
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Satomi Tasaki, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Kei Yoshida, Keiji Okinaka
  • Patent number: 10629821
    Abstract: The present invention provides a material useful as an organic electroluminescence device material, and particularly provides: a compound having, as a substituent, a substituted aromatic heterocyclic group having a specific structure wherein any of the 1-position to 6-position or the 7-position to 10-position of fluoranthene is substituted with a nitrogen atom; a material for low-voltage organic electroluminescence devices using the compound; and an organic electroluminescence device and an electronic equipment using the material.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: April 21, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Tasuku Haketa, Masahiro Kawamura, Yumiko Mizuki, Yoichi Ikeda
  • Patent number: 10622569
    Abstract: The present invention provides a compound having a fluoranthene skeleton represented by the formula (1); an organic electroluminescence device having plural organic thin film layers including a light-emitting layer between a cathode and an anode, wherein at least one layer of the organic thin film layers contains the compound; and an electronic equipment provided with the organic electroluminescence device. The organic electroluminescence device realizes further lower voltage driving and has high emission efficiency. [In the formula (1), X1 to X10, L, R1 to R9, and n are as stated in the description.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: April 14, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Tasuku Haketa, Masahiro Kawamura, Yumiko Mizuki, Hirokatsu Ito, Tomoharu Hayama
  • Patent number: 10590080
    Abstract: A compound is represented by a formula (1) below, in which k is an integer of 0 or more, m is an integer of 1 or more, n is an integer of 2 or more. L is a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 ring carbon atoms, CN is a cyano group, and D1 and D2 are each independently represented by one of a formula (2), a formula (3) and formula (3x) below, D1 and D2 being optionally mutually the same or different.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: March 17, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Satomi Tasaki, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Kei Yoshida, Keiji Okinaka
  • Publication number: 20200058881
    Abstract: A compound of formula (I), a material for an organic electroluminescence device comprising at least one compound of formula (I); an organic electroluminescence device which comprises an organic thin film layer between a cathode and an anode, wherein the organic thin film layer comprises one or more layers and comprises a light emitting layer, and at least one layer of the organic thin film layer comprises at least one compound of formula (I); an electronic equipment comprising the organic electroluminescence device; and a process for preparing the compound of formula (I).
    Type: Application
    Filed: December 28, 2017
    Publication date: February 20, 2020
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Michelle GROARKE, Takushi SHIOMI, Masahiro KAWAMURA, Hideaki NAGASHIMA
  • Patent number: 10547007
    Abstract: A compound represented by formula (1): wherein Ar is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted nitrogen-comprising heteroaryl group having 5 to 30 ring atoms; each of L1 and L2 is independently a single bond, a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroarylene group having 5 to 30 ring atoms, or a substituted or unsubstituted divalent linking group wherein 2 to 4 groups selected from an arylene group having 6 to 30 ring carbon atoms and a heteroarylene group having 5 to 30 ring atoms are bonded to each other via a single bond; A is a monovalent group represented by formula (2); and B is a monovalent group represented by formula (5): wherein R1 to R10 and R21 to R30 are as defined in the description, enables the emission of light of a purer blue (shorter wavelength), a narrower half width (hig
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: January 28, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Tasuku Haketa, Hirokatsu Ito, Yu Kudo, Masahiro Kawamura, Ryota Takahashi
  • Publication number: 20200013963
    Abstract: Specifically substituted ladder type compounds of formula (I) wherein A is formula (II) a material for an organic electroluminescence device comprising at least one compound of formula (I), and an organic electroluminescence device which comprises one or more organic thin film layers including an emitting layer between a cathode and an anode, wherein at least one layer of the organic thin film layers comprises at least one compound of formula (I).
    Type: Application
    Filed: December 19, 2017
    Publication date: January 9, 2020
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko MIZUKI, Kei YOSHIDA, Kiyoshi IKEDA, Masahiro KAWAMURA
  • Publication number: 20200006664
    Abstract: Anthracene derivatives each having a structure including an anthracene skeleton, a phenanthrene skeleton selected from among various phenanthrene skeletons different in bonding site which is bonded to the 9-position of the anthracene skeleton and a group selected from among various aryl groups and so on which is bonded to the 10-position of the anthracene skeleton. Organic EL devices made by using the derivatives exhibit high light emission efficiency and a long life.
    Type: Application
    Filed: September 9, 2019
    Publication date: January 2, 2020
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahiro KAWAMURA, Mitsunori Ito
  • Patent number: 10464895
    Abstract: A compound represented by formula (1) provides an organic electroluminescence device having a high efficiency and a long lifetime: wherein R1 to R5, R6 to R10, and R11 to R18 are as defined in the description.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: November 5, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Tomoki Kato, Masahiro Kawamura, Masakazu Funahashi
  • Patent number: 10461257
    Abstract: Anthracene derivatives each having a structure including an anthracene skeleton, a phenanthrene skeleton selected from among various phenanthrene skeletons different in bonding site which is bonded to the 9-position of the anthracene skeleton and a group selected from among various aryl groups and so on which is bonded to the 10-position of the anthracene skeleton. Organic EL devices made by using the derivatives exhibit high light emission efficiency and a long life.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: October 29, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahiro Kawamura, Mitsunori Ito
  • Patent number: 10461258
    Abstract: A compound represented by the following formula (1):
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: October 29, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Takushi Shiomi, Masahiro Kawamura
  • Patent number: 10435350
    Abstract: A compound is represented by the following formula (1). In the formula (1), Ar is a substituted or unsubstituted aryl group including 6 to 30 ring carbon atoms, Ra are independently a substituted or unsubstituted alkyl group including 1 to 15 carbon atoms, or a substituted or unsubstituted cycloalkyl group including 3 to 15 carbon atoms, Rb1 to Rb4 are independently a halogen atom, a cyano group, a substituted or unsubstituted alkyl group including 1 to 15 carbon atoms, or the like, Rc1 to Rc10 are independently a hydrogen atom, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group including 1 to 15 carbon atoms, or the like, * is a bonding position at which one of Rc1 to Rc10 is bonded to either nitrogen atom, x is an integer from 0 to 3, y is an integer from 0 to 4, and z are independently an integer from 0 to 5.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: October 8, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Hirokatsu Ito, Masahiro Kawamura, Yumiko Mizuki, Tasuku Haketa, Tomoharu Hayama, Ryota Takahashi
  • Patent number: 10396288
    Abstract: An organic EL device with high emission efficiency, an electronic equipment including the organic EL device, and a compound providing the organic EL device are provided.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: August 27, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Hirokatsu Ito, Masahiro Kawamura, Yumiko Mizuki, Tasuku Haketa, Tomoharu Hayama
  • Publication number: 20190221753
    Abstract: Provided are: an aromatic amine derivative in which a terminal substituent such as a dibenzofuran ring or a dibenzothiophene ring is bonded to a nitrogen atom directly or through an arylene group or the like; an organic electroluminescence device including an organic thin film layer formed of one or more layers including a light emitting layer and interposed between a cathode and an anode in which a layer of the organic thin film layer contains the aromatic amine derivative by itself or as a component of a mixture, and the device has a long lifetime and high luminous efficiency; and an aromatic amine derivative for realizing the device.
    Type: Application
    Filed: March 22, 2019
    Publication date: July 18, 2019
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko MIZUKI, Masakazu FUNAHASHI, Mitsunori ITO, Masahiro KAWAMURA
  • Publication number: 20190214563
    Abstract: An aromatic amine derivative represented by the following formula (1) wherein at least one of Ar1 to Ar4 is a heterocyclic group represented by the following formula (2) wherein X1 is an oxygen atom or a sulfur atom.
    Type: Application
    Filed: March 18, 2019
    Publication date: July 11, 2019
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko MIZUKI, Masakazu FUNAHASHI, Masahiro KAWAMURA
  • Publication number: 20190194219
    Abstract: An organic electroluminescence device including an anode, a cathode, and an emitting layer between the anode and the cathode, in which the emitting layer comprises a compound represented by the formula (1) and a compound represented by the formula (2).
    Type: Application
    Filed: August 28, 2017
    Publication date: June 27, 2019
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahiro KAWAMURA, Kazuki NISHIMURA
  • Publication number: 20190161497
    Abstract: Specifically substituted benzofuro- and benzothienoquinolines and their use in electronic devices, especially electroluminescent devices. When used as charge transport material, charge blocker material and/or host material in electroluminescent devices, the specifically substituted benzofuro- and benzothienoquinolines may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices and reduced driving voltage of electroluminescent devices.
    Type: Application
    Filed: June 13, 2017
    Publication date: May 30, 2019
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yuichi NISHIMAE, Michelle GROARKE, Heinz WOLLEB, Annemarie WOLLEB, Yuki NAKANO, Hideaki NAGASHIMA, Tasuku HAKETA, Masahiro KAWAMURA, Takushi SHIOMI
  • Patent number: 10297765
    Abstract: Provided are: an aromatic amine derivative in which a terminal substituent such as a dibenzofuran ring or a dibenzothiophene ring is bonded to a nitrogen atom directly or through an arylene group or the like; an organic electroluminescence device including an organic thin film layer formed of one or more layers including a light emitting layer and interposed between a cathode and an anode in which a layer of the organic thin film layer contains the aromatic amine derivative by itself or as a component of a mixture, and the device has a long lifetime and high luminous efficiency; and an aromatic amine derivative for realizing the device.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: May 21, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko Mizuki, Masakazu Funahashi, Mitsunori Ito, Masahiro Kawamura
  • Patent number: 10297757
    Abstract: An organic electroluminescence device having higher performance, in particular exhibiting a better driving voltage and a better external quantum efficiency, while having an extended lifetime; and an electronic equipment provided with the organic electroluminescence device are provided. In addition, a compound for realizing the same device and equipment is provided. Specifically, a compound having a specific structure having a triphenylene skeleton; an organic electroluminescence device using the compound; and an electronic equipment provided with the organic electroluminescence device were provided.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: May 21, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahiro Kawamura, Yumiko Mizuki, Hirokatsu Ito, Tomoharu Hayama, Tasuku Haketa
  • Patent number: RE47654
    Abstract: An organic electroluminescence device includes an anode, an emitting layer, an electron-transporting region, and a cathode, the anode, the emitting layer, the electron-transporting region, and the cathode being stacked in this order, the emitting layer including a host material, and a dopant material that emits fluorescence having a main peak wavelength of 550 nm or less, the electron-transporting region including a barrier layer that is adjacent to the emitting layer, and the barrier layer including a barrier material that includes an electron-transporting structural part, and a triplet barrier structural part that includes a fused polycyclic aromatic hydrocarbon compound, and satisfies the relationship “ETb>ETh” (where, ETh is the triplet energy of the host material, and ETb is the triplet energy of the barrier material).
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: October 22, 2019
    Assignee: IDEMITSU KOASN CO., LTD.
    Inventors: Yuichiro Kawamura, Masahiro Kawamura, Hitoshi Kuma, Hirokatsu Ito