Patents by Inventor Yasunori Ichihashi

Yasunori Ichihashi 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: 11957020
    Abstract: A light-emitting device is described that includes a plurality of partially drivable light sources, and a color conversion component configured to convert at least part of incident light from at least part of the light sources and emit outgoing light falling in a different wavelength region from the incident light, where the color conversion component includes a pyrromethene derivative.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: April 9, 2024
    Assignee: Toray Industries, Inc.
    Inventors: Yasunori Ichihashi, Daisaku Tanaka, Masahito Nishiyama, Keizo Udagawa, Yuka Tatematsu
  • Publication number: 20230340462
    Abstract: The present invention provides a novel method for producing a DNA molecule having adapter sequences added thereto and a use thereof. An embodiment of the present invention provides a method for producing a DNA molecule having adapter sequences added thereto, the method including: a preparation step of preparing a double-stranded DNA in which a first DNA strand and a second DNA strand are at least partially hybridized; and an annealing step of annealing a partially double-stranded oligonucleotide adapter to a 3? end of the first DNA strand of the double-stranded DNA, the partially double-stranded oligonucleotide adapter including a 3? overhang which is a protruding end that is to be annealed to the 3? end of the first DNA strand and that includes an oligonucleotide consisting of a random base sequence of at least 8 consecutive bases or a predetermined base sequence.
    Type: Application
    Filed: February 18, 2021
    Publication date: October 26, 2023
    Inventors: Yasunori ICHIHASHI, Tsuneo HAKOYAMA
  • Publication number: 20220251119
    Abstract: A pyrromethene-boron complex in one aspect of the present invention is a compound with a molecular weight of 1000 or more, represented by the following general formula (1), in which at least two of R1 to R6 are groups represented by the following general formula (2), [Chem 1] and in the general formula (1), X is C—R7 or N; R1 to R9, other than the groups represented by the following general formula (2), each are the same or different, and selected from the candidate group consisting of alkyl and other groups; [Chem 2] ?-L1L2R101)n)m)??(2) and in the general formula (2), L1 is selected from the candidate group consisting of oxygen and other groups; L2 is, for example, alkylene; when L2 is alkylene, the carbon atom bound to L1, in the alkylene group, is secondary or tertiary carbon; R101 is, for example, cyano; n is an integer of 0 to 5; m is an integer of 1 to 5; and m-(L2-(R101)n) each comprises three or more ring structures.
    Type: Application
    Filed: July 10, 2020
    Publication date: August 11, 2022
    Applicant: Toray Industries, Inc.
    Inventors: Kazuki Kobayashi, Daisaku Tanaka, Yasunori Ichihashi
  • Publication number: 20210336145
    Abstract: A pyrromethene-boron complex that can be used as a red light fluorescent material with improved emission efficiency and color purity is provided. A pyrromethene-boron complex represented by the following general formula (1) and satisfying at least one of (A) and (B) is provided: wherein, in the formula, X and R1 to R9 are selected from predetermined groups, at least one of four pairs of R1 and R2, R2 and R3, R4 and R5, and R5 and R6 has a ring structure represented by any one of the following general formulas (2A) to (2D): wherein, in the formulas, R101, R102 and R201 to R204 have the same meaning as R1 to R7 in the general formula (1), Ar is a substituted or unsubstituted aromatic hydrocarbon ring, or a substituted or unsubstituted aromatic heterocycle, R101 and R102 may form a ring, and * indicates a connection with the pyrromethene skeleton.
    Type: Application
    Filed: August 22, 2019
    Publication date: October 28, 2021
    Applicant: Toray Industries, Inc.
    Inventors: Yasunori Ichihashi, Daisaku Tanaka, Tsubasa Okano
  • Patent number: 11149196
    Abstract: An organic luminescent material suitable for color conversion material used for a liquid crystal display or LED lighting, excellent in luminous efficiency and durability, to which a pyrromethene-boron complex or a color conversion composition containing the pyrromethene-boron complex contributes, is provided.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: October 19, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Yasunori Ichihashi, Masaaki Umehara, Hirotoshi Sakaino, Daisaku Tanaka
  • Publication number: 20210134890
    Abstract: A light-emitting device is described that includes a plurality of partially drivable light sources, and a color conversion component configured to convert at least part of incident light from at least part of the light sources and emit outgoing light falling in a different wavelength region from the incident light, where the color conversion component includes a pyrromethene derivative.
    Type: Application
    Filed: January 18, 2019
    Publication date: May 6, 2021
    Applicant: Toray Industries, Inc.
    Inventors: Yasunori Ichihashi, Daisaku Tanaka, Masahito Nishiyama, Keizo Udagawa, Yuka Tatematsu
  • Publication number: 20210061821
    Abstract: A pyrromethene boron complex represented by the general formula (1) is described that satisfies at least one of conditions (A) and (B) as defined. The pyrromethene boron complex is used in a color conversion composition, and a color conversion film is used in a light source unit, a display, an illumination apparatus, and a light-emitting device, where in the general formula (1), X is C—R7 or N; and R1 to R9 are as defined.
    Type: Application
    Filed: December 20, 2018
    Publication date: March 4, 2021
    Applicant: Toray Industries, Inc.
    Inventors: Kazuki Kobayashi, Yasunori Ichihashi
  • Patent number: 10907094
    Abstract: A pyrromethene-boron complex is a compound represented by general formula (1). In general formula (1), X is C—R7 or N. R1 to R9 are each a group selected from prescribed groups, where R2 and R5 are selected from among the groups other than a substituted or unsubstituted aryl group and a substituted or unsubstituted heteroaryl group. R2 and R5 are groups not containing a heteroaryl group with at least two condensed rings. At least one of R1 to R6 is a group containing a fluorine atom.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: February 2, 2021
    Assignee: Toray Industries, Inc.
    Inventors: Yasunori Ichihashi, Kazuki Kobayashi
  • Patent number: 10836959
    Abstract: An organic luminescent material suitable for color conversion material used for a liquid crystal display or LED lighting, excellent in luminous efficiency and durability, to which a pyrromethene-boron complex or a color conversion composition containing the pyrromethene-boron complex contributes, is provided.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: November 17, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Yasunori Ichihashi, Masaaki Umehara, Hirotoshi Sakaino, Daisaku Tanaka
  • Publication number: 20200347292
    Abstract: An organic luminescent material suitable for color conversion material used for a liquid crystal display or LED lighting, excellent in luminous efficiency and durability, to which a pyrromethene-boron complex or a color conversion composition containing the pyrromethene-boron complex contributes, is provided.
    Type: Application
    Filed: July 22, 2020
    Publication date: November 5, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Yasunori Ichihashi, Masaaki Umehara, Hirotoshi Sakaino, Daisaku Tanaka
  • Publication number: 20190345380
    Abstract: A pyrromethene-boron complex is a compound represented by general formula (1). In general formula (1), X is C—R7 or N. R1 to R9 are each a group selected from prescribed groups, where R2 and R5 are selected from among the groups other than a substituted or unsubstituted aryl group and a substituted or unsubstituted heteroaryl group. R2 and R5 are groups not containing a heteroaryl group with at least two condensed rings. At least one of R1 to R6 is a group containing a fluorine atom.
    Type: Application
    Filed: November 21, 2017
    Publication date: November 14, 2019
    Applicant: Toray Industries, Inc.
    Inventors: Yasunori Ichihashi, Kazuki Kobayashi
  • Publication number: 20180134952
    Abstract: An organic luminescent material suitable for color conversion material used for a liquid crystal display or LED lighting, excellent in luminous efficiency and durability, to which a pyrromethene-boron complex or a color conversion composition containing the pyrromethene-boron complex contributes, is provided.
    Type: Application
    Filed: May 23, 2016
    Publication date: May 17, 2018
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Yasunori Ichihashi, Masaaki Umehara, Hirotoshi Sakaino, Daisaku Tanaka
  • Patent number: 9935273
    Abstract: The purpose of the present invention is to provide an organic thin-film luminescent element which exhibits improved luminous efficiency, drive voltage and durability life. This fluoranthene derivative is characterized by having a specific structure that contains a fluoranthene skeleton.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: April 3, 2018
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Yasunori Ichihashi, Tsuyoshi Tominaga, Daisaku Tanaka, Takeshi Ikeda, Takeshi Arai, Atsushi Ikeda
  • Publication number: 20150280139
    Abstract: The purpose of the present invention is to provide an organic thin-film luminescent element which exhibits improved luminous efficiency, drive voltage and durability life. This fluoranthene derivative is characterized by having a specific structure that contains a fluoranthene skeleton.
    Type: Application
    Filed: October 4, 2013
    Publication date: October 1, 2015
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Yasunori Ichihashi, Tsuyoshi Tominaga, Daisaku Tanaka, Takeshi Ikeda, Takeshi Arai, Atsushi Ikeda
  • Patent number: 8502201
    Abstract: The present invention relates to an organic thin-film light emitting device containing an organic compound represented by formula (1) and a donor compound. the light emitting device can achieve both of the low-voltage driving operation and high luminance efficiency. YA1-Ar)n1??(1) (Y represents either substituted or unsubstituted pyrene, or substituted or unsubstituted anthracene. A1 is selected from the group consisting of a single bond, an arylene group, and a hetero arylene group. Ar is selected from the group consisting of a carbazolyl group, a dibenzofuranyl group, and a dibenzothiophenyl group. These groups may be substituted or unsubstituted, and n1 is an integer of 1 to 3.).
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: August 6, 2013
    Assignee: TORAY Industries, Inc.
    Inventors: Kazumasa Nagao, Takeshi Arai, Takeshi Ikeda, Tsuyoshi Tominaga, Daisaku Tanaka, Yasunori Ichihashi, Koji Ueoka
  • Publication number: 20110121268
    Abstract: The present invention relates to an organic thin-film light emitting device containing an organic compound represented by formula (1) and a donor compound. the light emitting device ca achieve both of the low-voltage driving operation and high luminance efficiency. Y?A1-Ar)n1??(1) (Y represents either substituted or unsubstituted pyrene, or substituted or unsubstituted anthracene. A1 is selected from the group consisting of a single bond, an arylene group, and a hetero arylene group. Ar is selected from the group consisting of a carbazolyl group, a dibenzofuranyl group, and a dibenzothiophenyl group. These groups may be substituted or unsubstituted, and n1 is an integer of 1 to 3.
    Type: Application
    Filed: June 26, 2009
    Publication date: May 26, 2011
    Inventors: Kazumasa Nagao, Takeshi Arai, Takeshi Ikeda, Tsuyoshi Tominaga, Daisaku Tanaka, Yasunori Ichihashi, Koji Ueoka