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: 12265311
    Abstract: An electro-optical device includes an electro-optic crystal, a first electrode, and a second electrode. A voltage is applied to the electro-optic crystal by the first electrode and the second electrode. The electro-optic crystal has an incident surface and an emitting surface parallel to each other and deflects incident light made incident on the incident surface at an acute incident angle in an electric field direction in which a voltage is applied. A rotation axis of an incident angle is parallel to the electric field direction.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: April 1, 2025
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takashi Sakamoto, Yuichi Akage, Masahiro Ueno, Sohan Kawamura, Soichi Oka
  • Publication number: 20250091532
    Abstract: A first structure in which connection strength between an air impermeable layer and a compressed fiber layer is relatively low and a second structure in which connection strength between the air impermeable layer and the compressed fiber layer is higher than the connection strength of the first structure. A vehicular compartment soundproofing structure includes the second structure that has good soundproofing performance in a high frequency band (1000 Hz or higher) and the first structure that has improved soundproofing performance in a middle frequency band with suppressing lowering of insertion loss in the middle frequency band (200 Hz to 630 Hz). Accordingly, the soundproofing performance of a whole vehicular compartment can be improved.
    Type: Application
    Filed: January 20, 2023
    Publication date: March 20, 2025
    Applicants: TOYOTA BOSHOKU KABUSHIKI KAISHA, NIHON TOKUSHU TORYO CO., LTD.
    Inventors: Masahiro NAGANO, Yuji WATANABE, Hiroshi KAWAMURA
  • Patent number: 12215968
    Abstract: An angle measurement device according to the present invention relates to an angle measurement device for measuring an incident angle of an incident light ray, and includes: at least one light deflector; a driving power supply; a light receiver; and a calculation unit. The light deflector is of a transmission type, has an electro-optic effect, and is configured to change an optical path of the light ray by a voltage applied from the driving power supply, and cause the light ray to enter the light receiver. The calculation unit is configured to calculate the incident angle based on the voltage at which an intensity of the light ray detected by the light receiver is maximum.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: February 4, 2025
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Sohan Kawamura, Takashi Sakamoto, Masahiro Ueno, Yuichi Akage, Soichi Oka
  • Patent number: 12210264
    Abstract: An optical deflection apparatus is provided with an optical deflection element and a compensating optical element. The optical deflection element deflects incident light in a first direction (a voltage application direction) in which a voltage is applied (one-dimensional scan). The compensating optical element is an element which has an incidence surface and an emission surface, which compensates for a deflection deviation in a second direction that is perpendicular to the first direction and to an optical axis of the incident light of deflected light having been deflected by the optical deflection element and incident from the incidence surface, and which arranges a direction of travel of compensated light to be emitted from the emission surface on a same plane.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: January 28, 2025
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takashi Sakamoto, Yuichi Akage, Sohan Kawamura, Masahiro Ueno, Soichi Oka
  • Publication number: 20240400514
    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: July 31, 2024
    Publication date: December 5, 2024
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Satomi TASAKI, Masahiro KAWAMURA, Toshinari OGIWARA, Hitoshi KUMA, Kei YOSHIDA, Keiji OKINAKA
  • Publication number: 20240306490
    Abstract: Compounds of formulae (2-7) or (2-9) are provided: Also provided are organic electroluminescence (EL) devices containing the compounds having a high emission efficiency when operated at low voltage and a long lifetime and electronic devices including such organic EL devices.
    Type: Application
    Filed: April 25, 2024
    Publication date: September 12, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Ryota TAKAHASHI, Tomoki KATO, Hirokatsu ITO, Masahiro KAWAMURA, Masakazu FUNAHASHI, Hiroyuki SAITO, Yuichiro KAWAMURA, Yoshiaki TAKAHASHI, Tetsuya MASUDA, Hitoshi KUMA
  • Patent number: 12077500
    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 13, 2023
    Date of Patent: September 3, 2024
    Assignee: IDEMITSU KOSAN CO., LTD
    Inventors: Satomi Tasaki, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Kei Yoshida, Keiji Okinaka
  • Patent number: 12022728
    Abstract: The compound represented by formula (1): wherein A, B, R1, and R2 are as defined in the description, provides organic electroluminescence (EL) devices having a high emission efficiency when operated at low voltage and a long lifetime and electronic devices including such organic EL devices.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: June 25, 2024
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Ryota Takahashi, Tomoki Kato, Hirokatsu Ito, Masahiro Kawamura, Masakazu Funahashi, Hiroyuki Saito, Yuichiro Kawamura, Yoshiaki Takahashi, Tetsuya Masuda, Hitoshi Kuma
  • Publication number: 20240166592
    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: Application
    Filed: December 19, 2023
    Publication date: May 23, 2024
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Tomoki KATO, Taro YAMAKI, Masahiro KAWAMURA, Hirokatsu ITO
  • Patent number: 11939279
    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 10, 2021
    Date of Patent: March 26, 2024
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Tomoki Kato, Taro Yamaki, Masahiro Kawamura, Hirokatsu Ito
  • Publication number: 20230322673
    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: June 13, 2023
    Publication date: October 12, 2023
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Satomi TASAKI, Masahiro KAWAMURA, Toshinari OGIWARA, Hitoshi KUMA, Kei YOSHIDA, Keiji OKINAKA
  • Patent number: 11739061
    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 9, 2021
    Date of Patent: August 29, 2023
    Assignee: IDEMITSU KOSAN CO., LTD
    Inventors: Satomi Tasaki, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Kei Yoshida, Keiji Okinaka
  • Patent number: 11691983
    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: Grant
    Filed: June 13, 2017
    Date of Patent: July 4, 2023
    Assignee: 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: 11678571
    Abstract: A compound of formula (7) is provided wherein L4 is a linking group selected from the group consisting of: provided that an asterisk (*) indicates the position bonding to the nitrogen atom of the carbazolyl group, R6 to R13 are independently a hydrogen atom, or a phenyl group, Ar17 is an unsubstituted phenylphenyl group, and Ar18 is a phenylphenyl group which may be substituted by a phenyl group or a naphthyl group, or a phenyl group which may be substituted by a naphthyl group.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: June 13, 2023
    Assignees: Idemitsu Kosan Co., Ltd., JOLED Inc.
    Inventors: Masahiro Kawamura, Emiko Kambe, Akifumi Nakamura, Yasunori Kijima, Tadahiko Yoshinaga, Shigeyuki Matsunami
  • Patent number: 11631817
    Abstract: 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: Grant
    Filed: August 20, 2018
    Date of Patent: April 18, 2023
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahiro Kawamura, Tetsuya Masuda, Kazuki Nishimura
  • Patent number: 11552251
    Abstract: The compound represented by formula (1): wherein A, B, R1, and R2 are as defined in the description, provides organic electroluminescence (EL) devices having a high emission efficiency when operated at low voltage and a long lifetime and electronic devices including such organic EL devices.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: January 10, 2023
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Ryota Takahashi, Tomoki Kato, Hirokatsu Ito, Masahiro Kawamura, Masakazu Funahashi, Hiroyuki Saito, Yuichiro Kawamura, Yoshiaki Takahashi, Tetsuya Masuda, Hitoshi Kuma
  • Publication number: 20220363637
    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: June 9, 2021
    Publication date: November 17, 2022
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Satomi Tasaki, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Kei Yoshida, Keiji Okinaka
  • Patent number: 11456421
    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: September 9, 2019
    Date of Patent: September 27, 2022
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahiro Kawamura, Mitsunori Ito
  • Publication number: 20220278283
    Abstract: The compound represented by formula (1): wherein A, B, R1, and R2 are as defined in the description, provides organic electroluminescence (EL) devices having a high emission efficiency when operated at low voltage and a long lifetime and electronic devices including such organic EL devices.
    Type: Application
    Filed: April 29, 2022
    Publication date: September 1, 2022
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Ryota TAKAHASHI, Tomoki KATO, Hirokatsu ITO, Masahiro KAWAMURA, Masakazu FUNAHASHI, Hiroyuki SAITO, Yuichiro KAWAMURA, Yoshiaki TAKAHASHI, Tetsuya MASUDA, Hitoshi KUMA
  • Patent number: RE49343
    Abstract: An organic electroluminescence device includes: a cathode; an anode; and an organic thin-film layer disposed between the cathode and the anode, the organic thin-film layer having one or more layers including an emitting layer, in which the emitting layer includes a first material represented by the following formula (1) and a second material in a form of a fluorescent dopant material.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: December 20, 2022
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahiro Kawamura, Hirokatsu Ito, Toshinari Ogiwara, Yumiko Mizuki