Patents by Inventor Kohei Ishida

Kohei Ishida 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: 12252620
    Abstract: An ink jet ink composition which is an aqueous ink includes a resin dispersion, in which the resin dispersion is a polyurethane resin dispersion formed of a polyurethane resin (U) obtained by reacting an active hydrogen atom-containing component (A) containing a high-molecular-weight polyol component (a1) having a number-average molecular weight of 500 or more and an organic polyisocyanate component (B), and the high-molecular-weight polyol component (a1) includes a polyolefin polyol (a11) having a constituent unit represented by General Formula (1) and/or a constituent unit represented by General Formula (2), and a polyester polyol (a12) having a constituent unit represented by General Formula (3).
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: March 18, 2025
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Kohei Ishida, Kohei Sharyo, Tsuyoshi Fukushima
  • Patent number: 12215241
    Abstract: A printing ink jet ink composition of the present disclosure is an ink composition which includes an acidic dye; a water-soluble organic solvent; a lactam compound; and water, the acidic dye includes at least one selected from the group consisting of C.I. Acid Black 172 and C.I. Acid Black 52:1, a content of the acidic dye with respect to a total mass of the ink composition is 10 percent by mass or more, the water-soluble organic solvent includes a glycol ether compound having a standard boiling point of 195° C. to 290° C., the lactam compound includes at least one selected from the group consisting of 1-(2-hydroxyethyl)-2-pyrrolidone and ?-caprolactam, and a mass ratio of the lactam compound to the glycol ether compound is 3.5 to 20.
    Type: Grant
    Filed: March 28, 2023
    Date of Patent: February 4, 2025
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tomohiro Aruga, Kohei Ishida, Natsumi Okada
  • Patent number: 12172207
    Abstract: A method for manufacturing a continuous casting mold in which cracking and spalling are less likely to occur in a filling laminate. The method includes filling a plurality of concave portions formed on an inner surface of a copper-made mold copper plate or a copper alloy-made mold copper plate used for continuously casting steel at least in a region including a meniscus position of molten steel in a casting process with a metal having a thermal conductivity different from that of the mold copper plate.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: December 24, 2024
    Assignee: JFE STEEL CORPORATION
    Inventors: Tomoya Odagaki, Kohei Furumai, Norichika Aramaki, Kohei Ishida, Daiki Yanagida
  • Publication number: 20240228808
    Abstract: An ink composition for ink jet textile printing according to the present disclosure contains a specific acidic dye being at least one selected from the group consisting of C.I. Acid Blue 112 and C.I. Acid Blue 140, a water-soluble organic solvent, and water. A glycol-based solvent and a cyclic amide-based solvent are contained as the water-soluble organic solvent. The cyclic amide-based solvent contains at least either ?-caprolactam or N-hydroxyethyl-2-pyrrolidone. The content of the glycol-based solvent is 10.0% by mass or more.
    Type: Application
    Filed: January 9, 2024
    Publication date: July 11, 2024
    Inventors: Kohei ISHIDA, Yasuhiro OKI, Tomohiro ARUGA, Natsumi OKADA
  • Patent number: 11999863
    Abstract: A white ink composition which is an aqueous ink jet ink, includes a white colorant and a fixing resin, and the fixing resin contains an acrylic-based resin having an acid value of 50.0 to 100.0 mgKOH/g and a glass transition temperature of 20.0° C. to 50.0° C.
    Type: Grant
    Filed: November 24, 2021
    Date of Patent: June 4, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Kohei Ishida
  • Patent number: 11802216
    Abstract: A white ink composition is an aqueous ink jet ink and is used for recording on a low-absorbing recording medium or a non-absorbing recording medium, the white ink composition includes a white pigment; and a fixing resin, and the fixing resin contains a urethane resin having a THF soluble component in a two-hour dissolution time of 90 percent by mass or more and a glass transition temperature of 20° C. to 50° C.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: October 31, 2023
    Inventor: Kohei Ishida
  • Publication number: 20230312963
    Abstract: A printing ink jet ink composition of the present disclosure is an ink composition which includes an acidic dye; a water-soluble organic solvent; a lactam compound; and water, the acidic dye includes at least one selected from the group consisting of C.I. Acid Black 172 and C.I. Acid Black 52:1, a content of the acidic dye with respect to a total mass of the ink composition is 10 percent by mass or more, the water-soluble organic solvent includes a glycol ether compound having a standard boiling point of 195° C. to 290° C., the lactam compound includes at least one selected from the group consisting of 1-(2-hydroxyethyl)-2-pyrrolidone and ?-caprolactam, and a mass ratio of the lactam compound to the glycol ether compound is 3.5 to 20.
    Type: Application
    Filed: March 28, 2023
    Publication date: October 5, 2023
    Inventors: Tomohiro ARUGA, Kohei ISHIDA, Natsumi OKADA
  • Publication number: 20230265304
    Abstract: An ink jet textile-printing ink composition according to the present disclosure contains an acidic dye having water solubility of 30 g/L or less at 20° C., a water-soluble organic solvent, and water, wherein a glycol-based solvent and a cyclic-amide-based solvent are contained as the water-soluble organic solvent, and the cyclic-amide-based solvent contains one or both of ?-caprolactam and N-hydroxyethyl-2-pyrrolidone.
    Type: Application
    Filed: February 20, 2023
    Publication date: August 24, 2023
    Inventors: Kohei ISHIDA, Yasuhiro OKI, Tomohiro ARUGA
  • Patent number: 11633957
    Abstract: A recording method for using a line-type recording apparatus to scan a recording medium with a plurality of line heads once for recording, the line heads having a width greater than or equal to the recording width of the recording medium, the method including a treatment liquid deposition step of depositing a treatment liquid containing a coagulant on the recording medium, and an ink deposition step of ejecting a coloring ink composition from the line heads to deposit the coloring ink composition on the recording medium, wherein in the ink deposition step an identical coloring ink composition is ejected from a first line head placed on the upstream side in the transport direction perpendicular to the width direction of the recording medium and from a second line head placed on the downstream side in the transport direction.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: April 25, 2023
    Inventor: Kohei Ishida
  • Publication number: 20220388057
    Abstract: A method for manufacturing a continuous casting mold in which cracking and spalling are less likely to occur in a filling laminate. The method includes filling a plurality of concave portions formed on an inner surface of a copper-made mold copper plate or a copper alloy-made mold copper plate used for continuously casting steel at least in a region including a meniscus position of molten steel in a casting process with a metal having a thermal conductivity different from that of the mold copper plate.
    Type: Application
    Filed: October 23, 2020
    Publication date: December 8, 2022
    Applicant: JFE STEEL CORPORATION
    Inventors: Tomoya ODAGAKI, Kohei FURUMAI, Norichika ARAMAKI, Kohei ISHIDA, Daiki YANAGIDA
  • Publication number: 20220169873
    Abstract: A white ink composition which is an aqueous ink jet ink, includes a white colorant and a fixing resin, and the fixing resin contains an acrylic-based resin having an acid value of 50.0 to 100.0 mgKOH/g and a glass transition temperature of 20.0° C. to 50.0° C.
    Type: Application
    Filed: November 24, 2021
    Publication date: June 2, 2022
    Inventor: Kohei ISHIDA
  • Publication number: 20220033672
    Abstract: A white ink composition is an aqueous ink jet ink and is used for recording on a low-absorbing recording medium or a non-absorbing recording medium, the white ink composition includes a white pigment; and a fixing resin, and the fixing resin contains a urethane resin having a THF soluble component in a two-hour dissolution time of 90 percent by mass or more and a glass transition temperature of 20° C. to 50° C.
    Type: Application
    Filed: July 28, 2021
    Publication date: February 3, 2022
    Inventor: Kohei ISHIDA
  • Publication number: 20210371687
    Abstract: An aqueous white ink jet ink composition is provided for printing in which a treatment liquid containing a flocculant is applied onto a poorly absorbent or non-absorbent printing medium. The white ink composition contains a white pigment, a nonionic dispersant adapted to disperse the white pigment, and a fixing resin.
    Type: Application
    Filed: June 1, 2021
    Publication date: December 2, 2021
    Inventor: Kohei ISHIDA
  • Publication number: 20210301160
    Abstract: An ink jet ink composition which is an aqueous ink includes a resin dispersion, in which the resin dispersion is a polyurethane resin dispersion formed of a polyurethane resin (U) obtained by reacting an active hydrogen atom-containing component (A) containing a high-molecular-weight polyol component (a1) having a number-average molecular weight of 500 or more and an organic polyisocyanate component (B), and the high-molecular-weight polyol component (a1) includes a polyolefin polyol (a11) having a constituent unit represented by General Formula (1) and/or a constituent unit represented by General Formula (2), and a polyester polyol (a12) having a constituent unit represented by General Formula (3).
    Type: Application
    Filed: March 26, 2021
    Publication date: September 30, 2021
    Inventors: Kohei ISHIDA, Kohei SHARYO, Tsuyoshi FUKUSHIMA
  • Publication number: 20210198503
    Abstract: In an ink jet ink composition containing polymer particles, a polymer constituting the polymer particles includes a polymer having a urethane group derived from one or more isocyanates selected from dicyclohexylmethane diisocyanate, isophorone diisocyanate, 1,3-bis(isocyanatemethyl)cyclohexane, m-bis(isocyanatepropyl)benzene, and m-bis(isocyanatemethyl)benzene and a structure derived from polytetramethylene glycol and having an acid value of 50 to 100 mgKOH/g.
    Type: Application
    Filed: December 23, 2020
    Publication date: July 1, 2021
    Inventors: Masahiro YATAKE, Kazuhiko KITAMURA, Kohei ISHIDA
  • Publication number: 20200276827
    Abstract: A recording method for using a line-type recording apparatus to scan a recording medium with a plurality of line heads once for recording, the line heads having a width greater than or equal to the recording width of the recording medium, the method including a treatment liquid deposition step of depositing a treatment liquid containing a coagulant on the recording medium, and an ink deposition step of ejecting a coloring ink composition from the line heads to deposit the coloring ink composition on the recording medium, wherein in the ink deposition step an identical coloring ink composition is ejected from a first line head placed on the upstream side in the transport direction perpendicular to the width direction of the recording medium and from a second line head placed on the downstream side in the transport direction.
    Type: Application
    Filed: February 27, 2020
    Publication date: September 3, 2020
    Inventor: Kohei ISHIDA
  • Publication number: 20200248022
    Abstract: An aqueous ink composition contains at least one organic solvent in a proportion of 15.0% or less relative to the total mass of the ink composition and in which the content of organic solvents having a normal boiling point of more than 280.0° C. is limited to 3.0% or less of the total mass of the ink composition. The aqueous ink composition is ejected from a printing head having a circulation flow channel through which the ink composition circulates in the printing head.
    Type: Application
    Filed: January 30, 2020
    Publication date: August 6, 2020
    Inventor: Kohei ISHIDA
  • Patent number: 10501653
    Abstract: A pretreatment liquid for use in ink jet pigment textile printing contains at least one of a resin dispersion and a cross-linker, a lubricant, and water.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: December 10, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Kohei Ishida
  • Publication number: 20180282567
    Abstract: A pretreatment liquid for use in ink jet pigment textile printing contains at least one of a resin dispersion and a cross-linker, a lubricant, and water.
    Type: Application
    Filed: March 6, 2018
    Publication date: October 4, 2018
    Inventor: Kohei ISHIDA
  • Patent number: 9595675
    Abstract: A light-emitting element includes an anode, a cathode, a hole transporting layer provided between the anode and cathode, a light-emitting layer provided in contact with the hole transporting layer between the anode and cathode, where the surface of the light-emitting layer side of the hole transporting layer is formed in a shape having a part in which the distance with the reference surface along the anode changes in a continuous or step-wise manner, and the surface of the opposite side to the hole transporting layer of the light-emitting layer is formed so as to have the same shape as the surface of the light-emitting layer of the hole transporting layer.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: March 14, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takumi Sago, Masahiro Uchida, Kohei Ishida, Shotaro Watanabe