Patents by Inventor Hitomi MUTO

Hitomi MUTO 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).

  • Liquid-Crystal Composition Containing Anthraquinone Compound And Light-Modulating Element
    Publication number: 20240141234
    Abstract: The present invention relates to a liquid-crystal composition comprising (A) dye compounds and (B) a liquid-crystal material, wherein the dye compounds (A) include an anthraquinone compound represented by general formula (1) and an anthraquinone compound represented by general formula (2) in a specific proportion and further include a dye compound which is neither the anthraquinone compound represented by general formula (1) nor the anthraquinone compound represented by general formula (2). The present invention further relates to a liquid-crystal composition comprising the (A) and (B) components and further containing (C) a. photocurable compound and (D) a photopolymerization initiator, a cured object obtained from the liquid-crystal composition, and a light-modulating element in which the liquid-crystal composition or the cured object is sandwiched therein.
    Type: Application
    Filed: January 19, 2022
    Publication date: May 2, 2024
    Inventors: Hitomi Muto, Kohei Ohtani, Saori Suzuki, Takashi Yoshimoto, Masakazu Shiraishi, Kanae Ogawa
  • ANTHRAQUINONE COMPOUND, LIQUID CRYSTAL COMPOSITION CONTAINING SAID COMPOUND, AND DIMMING ELEMENT
    Publication number: 20240140907
    Abstract: The present invention is an anthraquinone compound represented by formula (1) (in the formula. R1 represents a hydrogen atom, a C1-C12 linear or branched alkyl group, or a C1-C12 linear or branched alkoxy group, and R2 represents a substituent represented by: formula (a) (in formula (a), R3 represents a hydrogen atom, a C1-C8 linear or branched alkyl group, a C1-C8 linear or branched alkoxy group, or a substituent represented by —CH2OR4, where R4 represents a C1-C8 linear or branched alkyl group); or formula (b) (in formula (b). R5 represents a hydrogen atom, a C1-C8 linear or branched alkyl group, or a substituent represented by —CH2OR6, where R6 represents a C1-C8 linear or branched alkyl group)).
    Type: Application
    Filed: April 11, 2022
    Publication date: May 2, 2024
    Inventors: Kohei Ohtani, Masakazu Shiraishi, Hitomi Muto, Saori Suzuki, Kanae Ogawa
  • Anthraquinone compound, liquid crystal composition for dimming including said compound, and dimming element
    Patent number: 11905417
    Abstract: The present invention relates to an anthraquinone compound represented by formula (1) (in formula (1), R1 represents a C1-9 alkyl group and R2 represents a C1-8 alkyl group): a yellow dichroic pigment that includes this compound; a liquid crystal composition for light control that contains this yellow dichroic pigment and a liquid crystal material; and a light control element that uses this composition.
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: February 20, 2024
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kohei Ohtani, Hitomi Muto, Saori Suzuki, Takashi Yoshimoto
  • Anthraquinone Compound, Liquid Crystal Composition For Dimming Including Said Compound, And Dimming Element
    Publication number: 20230340268
    Abstract: The present invention relates to an anthraquinone compound represented by formula (1) (in formula (1), R1 represents a C 1-9 alkyl group and R2 represents a C 1-8 alkyl group.); a yellow dichroic pigment that includes this compound: a liquid crystal composition for light control that contains this yellow dichroic pigment and a liquid crystal material: and a light control element that uses this composition.
    Type: Application
    Filed: June 1, 2021
    Publication date: October 26, 2023
    Inventors: Kohei Ohtani, Hitomi Muto, Saori Suzuki, Takashi Yoshimoto
  • Water-soluble azo compound or salt thereof, ink and recording medium
    Patent number: 11512203
    Abstract: A compound represented by formula (1) or a salt thereof, and an ink including the same.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: November 29, 2022
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Shinya Nagatsuka, Taku Iino, Hitomi Muto
  • WATER-SOLUBLE AZO COMPOUND OR SALT THEREOF, INK AND RECORDING MEDIUM
    Publication number: 20210292566
    Abstract: A compound represented by formula (1) or a salt thereof, and an ink including the same.
    Type: Application
    Filed: October 20, 2017
    Publication date: September 23, 2021
    Inventors: Shinya NAGATSUKA, Taku IINO, Hitomi MUTO