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).

  • Patent number: 11152574
    Abstract: A compound of formula (9) is provided. wherein, B1 and B2 are a methyl group, Z1 and Z2 are a hydrogen atom, X1 is an N-carbazolyl group, X2 is a —NAr21?Ar22? group, Ar21? is a 2-phenylphenyl group, a 3-phenylphenyl group, or a 4-phenylphenyl group, and Ar22? is a 1-naphthyl group, a 2-naphthyl group, a 2-phenylphenyl group, a 3-phenylphenyl group, a 4-phenylphenyl group, a 2-fluorenyl group, a 9,9-dimethyl-2-fluorenyl group or a phenanthryl group. Also provided is an organic electroluminescent device comprising a compound of formula (9).
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: October 19, 2021
    Assignees: Idemitsu Kosan Co., Ltd., JOLED Inc.
    Inventors: Masahiro Kawamura, Emiko Kambe, Akifumi Nakamura, Yasunori Kijima, Tadahiko Yoshinaga, Shigeyuki Matsunami
  • Patent number: 11133478
    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: March 22, 2019
    Date of Patent: September 28, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko Mizuki, Masakazu Funahashi, Mitsunori Ito, Masahiro Kawamura
  • Patent number: 11117857
    Abstract: A compound represented by formula (1) provides a high performance organic electroluminescence device and a novel material for realizing such an organic electroluminescence device: wherein R1 to R6, a to f, L1 to L3, and Ar are as defined in the description.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: September 14, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Tomoki Kato, Taro Yamaki, Masahiro Kawamura, Hirokatsu Ito
  • Publication number: 20210265961
    Abstract: Provided is a high-frequency amplifier capable of making a circuit substrate small and reducing a cost. A high-frequency amplifier is provided with a first substrate including a matching unit, and a second substrate including a transistor and a first impedance converter connected to each other, in which the matching unit of the first substrate and the first impedance converter are connected to each other via a first connection. Furthermore, the high-frequency amplifier is further provided with a third substrate including a matching unit, in which the second substrate may further include a second impedance converter connected to the transistor, and the second impedance converter and the matching unit of the third substrate may be connected to each other via a second connection.
    Type: Application
    Filed: September 12, 2018
    Publication date: August 26, 2021
    Inventors: TAKASHI KAWAMURA, MASAHIRO SATO
  • Patent number: 11094888
    Abstract: An organic electroluminescent device including: an anode, a cathode, an emitting layer formed of an organic compound and interposed between the cathode and the anode, and two or more layers provided in a hole-injecting/hole-transporting region between the anode and the emitting layer; of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is in contact with the emitting layer containing a compound represented by the formula (1); and of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is interposed between the anode and the layer which is in contact with the emitting layer containing an amine derivative represented by the formula (2).
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: August 17, 2021
    Assignees: Idemitsu Kosan Co., Ltd., JOLED Inc.
    Inventors: Masahiro Kawamura, Emiko Kambe, Akifumi Nakamura, Yasunori Kijima, Tadahiko Yoshinaga, Shigeyuki Matsunami
  • Patent number: 11059781
    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: September 9, 2020
    Date of Patent: July 13, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Satomi Tasaki, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Kei Yoshida, Keiji Okinaka
  • Patent number: 11024806
    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: Grant
    Filed: May 1, 2020
    Date of Patent: June 1, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko Mizuki, Masakazu Funahashi, Masahiro Kawamura
  • Patent number: 10964891
    Abstract: An organic light-emitting medium including a pyrene derivative represented by the following formula (1) and a phenyl-substituted anthracene derivative represented by the following formula (2): wherein Ar1 to Ar4 are independently a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 5 to 20 ring atoms.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: March 30, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko Mizuki, Hirokatsu Ito, Takeshi Ikeda, Hiroyuki Saito, Masahiro Kawamura, Yuichiro Kawamura
  • Publication number: 20210083194
    Abstract: A compound of formula (9) is provided. wherein, B1 and B2 are a methyl group, Z1 and Z2 are a hydrogen atom, X1 is an N-carbazolyl group, X2 is a —NAr21?Ar22? group, Ar21? is a 2-phenylphenyl group, a 3-phenylphenyl group, or a 4-phenylphenyl group, and Ar22? is a 1-naphthyl group, a 2-naphthyl group, a 2-phenylphenyl group, a 3-phenylphenyl group, a 4-phenylphenyl group, a 2-fluorenyl group, a 9,9-dimethyl-2-fluorenyl group or a phenanthryl group. Also provided is an organic electroluminescent device comprising a compound of formula (9).
    Type: Application
    Filed: November 30, 2020
    Publication date: March 18, 2021
    Applicants: Idemitsu Kosan Co., Ltd., JOLED Inc.
    Inventors: MASAHIRO KAWAMURA, Emiko KAMBE, Akifumi NAKAMURA, Yasunori KIJIMA, Tadahiko YOSHINAGA, Shigeyuki MATSUNAMI
  • Publication number: 20200407315
    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: September 9, 2020
    Publication date: December 31, 2020
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Satomi TASAKI, Masahiro KAWAMURA, Toshinari OGIWARA, Hitoshi KUMA, Kei YOSHIDA, Keiji OKINAKA
  • Patent number: 10862049
    Abstract: A composition contains a mixture of at least two compounds, the at least two compounds containing a first compound represented by a formula (1) and a second compound represented by a formula (2). In the formula (1), R1 to R4, A1 and A2 include five cyclic structures in total each represented by a formula (1a) below. In the formula (2), one of A3 and A4 is a substituent represented by a formula (2a), and the other thereof is represented by a formula (2b).
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: December 8, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahiro Kawamura, Hiroyuki Iwabuchi, Tetsuya Masuda, Hitoshi Kuma
  • Patent number: 10851055
    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: January 10, 2020
    Date of Patent: December 1, 2020
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Satomi Tasaki, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Kei Yoshida, Keiji Okinaka
  • Publication number: 20200365811
    Abstract: An organic electroluminescence device includes an anode, a cathode, and at least one organic layer provided between the anode and the cathode, in which the at least one organic layer contains a first compound represented by a formula (1) and a second compound represented by a formula (2). In the formula (1), A1 is a substituted or unsubstituted nitrogen-containing heterocyclic group having 5 to 24 ring atoms, and L1 is a single bond, a substituted or unsubstituted divalent aryl group having 6 to 24 ring carbon atoms or a substituted or unsubstituted divalent heterocyclic group having 5 to 24 ring atoms. In the formula (2), X1 is an oxygen atom or a sulfur atom.
    Type: Application
    Filed: August 20, 2018
    Publication date: November 19, 2020
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Masahiro KAWAMURA, Tetsuya MASUDA, Kazuki NISHIMURA
  • Patent number: 10797244
    Abstract: A compound is represented by a formula (1). In the formula (1); Ar represents an aromatic hydrocarbon group or a heterocyclic group having 4 or more fused rings and 22 or less ring atoms; Ar optionally has a substituent; R11 is a substituted or unsubstituted aromatic hydrocarbon group; when R11 is an aromatic hydrocarbon group having a substituent, the substituent is not a heterocyclic group; X1 represents a nitrogen atom or a carbon atom bonded with R12 (CR12); R12 represents a hydrogen atom or a substituent; L1 represents a single bond or a linking group; X2 and X3 each independently represent a nitrogen atom or a carbon atom bonded with R2 (CR2); R1 and R2 each independently represent a hydrogen atom or a substituent; and L2 is a linking group.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: October 6, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Tomoharu Hayama, Tetsuya Masuda, Masahiro Kawamura, Hirokatsu Ito, Yumiko Mizuki, Tomoki Kato, Takushi Shiomi
  • Patent number: 10790449
    Abstract: Provided are an organic EL device having a high emission efficiency, a material for organic EL devices, which is capable of realizing the same, and the like. More specifically, provided are a compound represented by the following formula (1), a material for organic electroluminescence devices, which contains the compound, an organic electroluminescence device using the compound, and an electronic equipment provided with the organic electroluminescence device: wherein Ar represents a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 5 to 50 ring atoms, or a group formed by a combination of these groups, and W to R9 each independently represent a hydrogen atom or a substituent, provided that any pair of R2 and R3, R3 and R4, R4 and R5, R6 and R7, R7 and R8, and R8 and R9 are optionally bonded to each other to form a benzene ring.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: September 29, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Tasuku Haketa, Masahiro Kawamura, Yumiko Mizuki, Yoichi Ikeda
  • Patent number: 10784446
    Abstract: A compound is represented by a formula (100) below, where X1, X2 and X3 are each independently a nitrogen atom or a carbon atom bonded with R2, Y is an oxygen atom, a sulfur atom and the like, R1, R2, R11, R21 and R22 are each a hydrogen atom or a substituent, L1 is a single bond or a linking group, and L2 is a linking group.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: September 22, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Tomoharu Hayama, Tetsuya Masuda, Masahiro Kawamura, Hirokatsu Ito, Tasuku Haketa, Yumiko Mizuki
  • Patent number: 10763442
    Abstract: A compound having a structure wherein at least 8-position or 9-position of fluoranthene is replaced by a nitrogen atom, a material for organic electroluminescence devices including the compound, and an organic electroluminescence device and an electronic equipment each including the material are provided. The compound is represented by formula (1): wherein A represents CR0 or N; R0 to R8 each independently represent a hydrogen atom or a substituent; at least one selected from R0 to R8 represents a substituent other than hydrogen atom; and groups selected from R0 to R8 which are bonded to adjacent carbon atoms may be bonded to each other to form a saturated or unsaturated ring structure.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: September 1, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Takashi Kashiwamura, Kiyoshi Ikeda, Hironori Kawakami, Masahiro Kawamura
  • Publication number: 20200259087
    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: May 1, 2020
    Publication date: August 13, 2020
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko MIZUKI, Masakazu FUNAHASHI, Masahiro KAWAMURA
  • Patent number: 10703762
    Abstract: A compound represented by the following formula (1):
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: July 7, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yu Kudo, Yumiko Mizuki, Masahiro Kawamura, Tomoki Kato, Hirokatsu Ito, Tasuku Haketa, Yuichi Nishimae, Annemarie Wolleb
  • Patent number: 10686137
    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: Grant
    Filed: March 18, 2019
    Date of Patent: June 16, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko Mizuki, Masakazu Funahashi, Masahiro Kawamura