Patents by Inventor Koromo Shirota

Koromo Shirota 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: 11970438
    Abstract: There is provided a compound having a structure represented by the following Formula (1), in Formula (1), R1 and R2 each independently represent a phenyl group having a substituent or an unsubstituted phenyl group, R3 and R4 each independently represent a C2-C12 alkyl group having a substituent or an unsubstituted C2-C12 alkyl group, a cyano group, a trifluoromethyl group, or a halogen atom, R5 and R6 each independently represent a hydrogen atom or an alkyl group, R7 represents a phenyl group having a substituent, an unsubstituted phenyl group, or a heteroaromatic group having a specific structure, and X? represents an anion, and in a case where at least one anionic substituent is included in a molecule, X? may not be present.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: April 30, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ai Hayakawa, Koromo Shirota, Taichi Shintou, Tsuyoshi Santo
  • Patent number: 11958978
    Abstract: A coloring compound comprises a triphenylmethane structure having specific substituents.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: April 16, 2024
    Assignee: Canon Kabuskiki Kaisha
    Inventors: Ai Hayakawa, Masanori Seki, Koromo Shirota, Hajime Muta, Taichi Shintou, Tsuyoshi Santo
  • Patent number: 11904621
    Abstract: A thermal transfer recording sheet including a substrate and a yellow coloring material layer, a magenta coloring material layer, and a cyan coloring material layer frame-sequentially formed on the substrate, wherein at least one of the yellow coloring material layer, the magenta coloring material layer, and the cyan coloring material layer contains a compound with a specified structure.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: February 20, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ai Hayakawa, Koromo Shirota, Taichi Shintou, Tsuyoshi Santo
  • Publication number: 20240025197
    Abstract: A thermal transfer recording sheet includes a substrate, a yellow coloring material layer, a magenta coloring material layer, a cyan coloring material layer, and a protective layer. The yellow coloring material layer, the magenta coloring material layer, the cyan coloring material layer, and the protective layer are frame-sequentially arranged over the substrate. The protective layer contains a compound represented by formula (1): where each A is independently ?CH— or ?CH—C6H4—, each Y is independently an oxygen atom or a sulfur atom, and R1 and R2 are each independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
    Type: Application
    Filed: July 17, 2023
    Publication date: January 25, 2024
    Inventors: TAICHI SHINTOU, KOROMO SHIROTA, TSUYOSHI SANTO
  • Publication number: 20230151231
    Abstract: A printed product including: a yellow image formed on an image receiving sheet including a coloring material receiving layer and a surface protective layer formed on the yellow image, wherein the yellow image and the surface protective layer are formed by sequentially applying heat to a yellow coloring material layer for forming the yellow image and a surface protective layer forming layer for forming a surface protective layer through use of a thermal transfer recording sheet including the yellow coloring material layer and the surface protective layer forming layer field sequentially; the yellow coloring material layer contains a compound having a predetermined structure as a yellow coloring material, and wherein in the printed product having formed thereon the yellow image and the surface protective layer, the compound permeates into the coloring material receiving layer to a depth of 2 ?m or more.
    Type: Application
    Filed: November 8, 2022
    Publication date: May 18, 2023
    Inventors: Koromo Shirota, Masataka Yashima, Taichi Shintou, Tsuyoshi Santo, Tomoyuki Noda
  • Publication number: 20220389651
    Abstract: Provided is a colored polypropylene resin composition, which is excellent in high color developability, washing resistance, and sublimation resistance, and can be stably supplied. The colored polypropylene resin composition includes a polypropylene resin and a colorant, and is characterized by including a compound having a predetermined structure as the colorant.
    Type: Application
    Filed: May 2, 2022
    Publication date: December 8, 2022
    Inventors: Taichi Shintou, Koromo Shirota, Tsuyoshi Santo
  • Patent number: 11472962
    Abstract: An object of the present invention is to provide a compound exhibiting a cyan color having properties such as high chroma, high light fastness, and high solubility. The compound is represented by the following General Formula (1). In Formula (1), R1 and R2 each independently represent a linear, branched, or cyclic alkyl group having 6 or more and 12 or fewer carbon atoms, R3 represents a 4-alkylphenyl group, a 4-halogenated phenyl group, or a 3-alkoxyphenyl group, R4 represents a linear, branched, or cyclic alkyl group having 1 or more and 8 or fewer carbon atoms, and R5 represents a linear, branched, or cyclic alkyl group having 1 or more and 8 or fewer carbon atoms or a benzyl group.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: October 18, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Taichi Shintou, Koromo Shirota, Ai Hayakawa, Tsuyoshi Santo
  • Patent number: 11434375
    Abstract: An object of the present invention is to provide a compound exhibiting a cyan color having properties such as high chroma, high light fastness, and high solubility. The compound is represented by the following General Formula (1). In Formula (1), R1 and R2 each independently represent a linear, branched, or cyclic alkyl group having 6 or more and 12 or fewer carbon atoms, R3 represents a 4-alkylphenyl group, a 4-halogenated phenyl group, or a 3-alkoxyphenyl group, R4 represents a linear, branched, or cyclic alkyl group having 1 or more and 8 or fewer carbon atoms, and R5 represents a linear, branched, or cyclic alkyl group having 1 or more and 8 or fewer carbon atoms or a benzyl group.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: September 6, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Taichi Shintou, Koromo Shirota, Ai Hayakawa, Tsuyoshi Santo
  • Patent number: 11097566
    Abstract: An object of the present invention is to provide a thermal transfer recording sheet that provides an image that is excellent in light fastness and has a satisfactory imbalance. The present invention relates to a thermal transfer recording sheet including a substrate and dye layers (a yellow dye layer, a magenta dye layer, and a cyan dye layer), in which one or more kinds of the dye layers each contain one or more kinds of specific compounds. The present invention also relates to a thermal transfer recording sheet including a substrate, dye layers, and a protective layer for protecting the surface of an image, in which the protective layer contains one or more kinds of specific compounds.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: August 24, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuko Katsumoto, Koromo Shirota, Tsuyoshi Santo, Taichi Shintou, Hajime Muta, Tomoyuki Noda
  • Publication number: 20210230109
    Abstract: There is provided a compound having a structure represented by the following Formula (1), in Formula (1), R1 and R2 each independently represent a phenyl group having a substituent or an unsubstituted phenyl group, R3 and R4 each independently represent a C2-C12 alkyl group having a substituent or an unsubstituted C2-C12 alkyl group, a cyano group, a trifluoromethyl group, or a halogen atom, R5 and R6 each independently represent a hydrogen atom or an alkyl group, R7 represents a phenyl group having a substituent, an unsubstituted phenyl group, or a heteroaromatic group having a specific structure, and X? represents an anion, and in a case where at least one anionic substituent is included in a molecule, X? may not be present.
    Type: Application
    Filed: April 15, 2021
    Publication date: July 29, 2021
    Inventors: Ai Hayakawa, Koromo Shirota, Taichi Shintou, Tsuyoshi Santo
  • Publication number: 20210171792
    Abstract: The present invention provides a pigment dispersion having excellent dispersibility and storage stability, a pigment dispersion including: a dispersion medium, a compound represented by the following formula (1), and at least one pigment selected from the group consisting of C. I. Pigment Blue 15, C. I. Pigment Blue 15:1, C. I. Pigment Blue 15:2, C. I. Pigment Blue 15:3, C. I. Pigment Blue 15:4, C. I. Pigment Blue 15:6, C. I. Pigment Green 7, C. I. Pigment Green 36, and C. I. Pigment Green 58, which are dispersed in the dispersion medium.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 10, 2021
    Inventors: Taichi Shintou, Koromo Shirota, Ai Hayakawa, Tsuyoshi Santo
  • Patent number: 11021436
    Abstract: Provided is, for example, a compound excellent in light fastness and storage stability. The compound is characterized by having a structure represented by the following formula (1) or (2).
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: June 1, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koromo Shirota, Taichi Shintou, Ai Hayakawa, Tsuyoshi Santo
  • Publication number: 20210115259
    Abstract: The azomethine compound provided by this case is a compound showing high chroma and having excellent light resistance.
    Type: Application
    Filed: December 28, 2020
    Publication date: April 22, 2021
    Inventors: Taichi Shintou, Koromo Shirota, Ai Hayakawa, Tsuyoshi Santo
  • Publication number: 20210060995
    Abstract: A thermal transfer recording sheet including a substrate and a yellow coloring material layer, a magenta coloring material layer, and a cyan coloring material layer frame-sequentially formed on the substrate, wherein at least one of the yellow coloring material layer, the magenta coloring material layer, and the cyan coloring material layer contains a compound with a specified structure.
    Type: Application
    Filed: August 17, 2020
    Publication date: March 4, 2021
    Inventors: Ai Hayakawa, Koromo Shirota, Taichi Shintou, Tsuyoshi Santo
  • Publication number: 20200347007
    Abstract: Provided is, for example, a compound excellent in light fastness and storage stability. The compound is characterized by having a structure represented by the following formula (1) or (2).
    Type: Application
    Filed: July 16, 2020
    Publication date: November 5, 2020
    Inventors: Koromo Shirota, Taichi Shintou, Ai Hayakawa, Tsuyoshi Santo
  • Publication number: 20200339814
    Abstract: An object of the present invention is to provide a compound exhibiting a cyan color having properties such as high chroma, high light fastness, and high solubility. The compound is represented by the following General Formula (1). In Formula (1), R1 R2 each independently represent a linear, branched, or cyclic alkyl group having 6 or more and 12 or fewer carbon atoms, R3 represents a 4-alkylphenyl group, a 4-halogenated phenyl group, or a 3-alkoxyphenyl group, R4 represents a linear, branched, or cyclic alkyl group having 1 or more and 8 or fewer carbon atoms, and R5 represents a linear, branched, or cyclic alkyl group having 1 or more and 8 or fewer carbon atoms or a benzyl group.
    Type: Application
    Filed: July 10, 2020
    Publication date: October 29, 2020
    Inventors: Taichi Shintou, Koromo Shirota, Ai Hayakawa, Tsuyoshi Santo
  • Publication number: 20200283633
    Abstract: A coloring compound comprises a triphenylmethane structure having specific substituents.
    Type: Application
    Filed: May 20, 2020
    Publication date: September 10, 2020
    Inventors: Ai Hayakawa, Masanori Seki, Koromo Shirota, Hajime Muta, Taichi Shintou, Tsuyoshi Santo
  • Patent number: 10647142
    Abstract: In a thermal transfer recording sheet including a base material and a colorant layer, the colorant layer includes a yellow dye layer containing a yellow dye, a magenta dye layer containing a magenta dye, and a cyan dye layer containing a cyan dye, and the cyan dye includes a compound represented by Formula (1a) or Formula (1b): where R1 to R7 are substituents, X? is an anion, and the compound of Formula (1b) has at least one anionic substituent.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: May 12, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Taichi Shintou, Masahiro Suenaga, Koromo Shirota, Yuko Katsumoto, Tsuyoshi Santo, Hajime Muta, Tomoyuki Noda
  • Publication number: 20200131371
    Abstract: A compound excellent in chroma, light resistance and solubility. The compound has a structure represented by Formula (1). wherein R1 and R2 each independently represent a linear or branched alkyl group having 1 to 12 carbon atoms, R3 represents a linear or branched alkyl group having 1 to 4 carbon atoms, an aryl group having a substituent, or an unsubstituted aryl group, and R4 represents an alkyl group having 1 to 4 carbon atoms; and R5 and R6 each independently represent a linear, branched or cyclic alkyl group having 1 to 8 carbon atoms, an alkyl group having a hydroxyl group at the terminal, an aryl group having a substituent, or an unsubstituted aryl group; and R5 and R6 may be combined to form a heterocycle.
    Type: Application
    Filed: October 18, 2019
    Publication date: April 30, 2020
    Inventors: Taichi Shintou, Koromo Shirota, Ai Hayakawa, Tsuyoshi Santo
  • Patent number: 10501631
    Abstract: A thermal transfer recording sheet includes a base material and, on the base material, a yellow-dye layer containing a yellow dye, a magenta-dye layer containing a magenta dye, and a cyan-dye layer containing a cyan dye. The yellow dye and the cyan dye contain compounds having specific structures.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: December 10, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Taichi Shintou, Koromo Shirota, Yuko Katsumoto, Tsuyoshi Santo, Hajime Muta, Tomoyuki Noda