Patents by Inventor Nao KOZAKA

Nao KOZAKA 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).

  • Ink jet ink composition, ink pack, and ink jet printing method
    Patent number: 11639061
    Abstract: An ink jet ink composition contains a dye having an azo group, water, and a hindered amine compound having a radical. The dissolved nitrogen concentration of the ink composition is 10 ppm or less.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: May 2, 2023
    Inventors: Nao Kozaka, Yuki Wakushima, Yoshitaka Miyajima, Takeshi Yano, Chitae Hashizume
  • Treatment Solution Composition For Ink Jet Textile Printing, Ink Set, And Recording Method
    Publication number: 20220205174
    Abstract: A treatment solution composition for ink jet textile printing contains one or more selected from the group consisting of a glycol solvent with a molecular weight of 100 or less and a sugar with a molecular weight of 400 or less, water, and an alkaline agent.
    Type: Application
    Filed: December 22, 2021
    Publication date: June 30, 2022
    Inventors: Nao KOZAKA, Yoshitaka MIYAJIMA, Takuya SONOYAMA
  • Textile printing ink jet ink composition set and recording method
    Patent number: 11292930
    Abstract: A textile printing ink jet ink composition set includes a textile printing ink jet ink composition having a hue angle ?h° within a range of 260° or more and 310° or less and a chroma C* of 45 or less, which are specified in the CIELAB color space, on a textile printing product after textile printing; and a textile printing ink jet ink composition having a hue angle ?h° within a range of 15° or more and 80° or less and a chroma C* of 65 or less, which are specified in the CIELAB color space, on a textile printing product after textile printing.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: April 5, 2022
    Inventors: Yoshitaka Miyajima, Yuki Wakushima, Nao Kozaka, Hideki Oguchi, Takuya Sonoyama
  • Recording method
    Patent number: 11255044
    Abstract: An ink jet recording method performed on a fabric to which a hydrotropic agent is attached includes attaching an ink jet composition for textile printing including a metal complex salt dye, in which a hue angle ?h° defined in CIELAB color space on printed textiles after printing is in a range of 260° or more and 310° or less, to the fabric using an ink jet method, in which there is a region in which a value of a ratio of a mass of the metal complex salt dye with respect to a total mass of dyes included in the ink jet composition for textile printing is 0.6 or more and 1.0 or less, and a value of a ratio of mass of the metal complex salt dye with respect to a mass of the hydrotropic agent in the fabric is 0.2 or more and 1.0 or less.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: February 22, 2022
    Inventors: Yoshitaka Miyajima, Yuki Wakushima, Nao Kozaka, Hideki Oguchi, Takuya Sonoyama
  • Ink Jet Ink Composition, Ink Pack, And Ink Jet Printing Method
    Publication number: 20200095443
    Abstract: An ink jet ink composition contains a dye having an azo group, water, and a hindered amine compound having a radical. The dissolved nitrogen concentration of the ink composition is 10 ppm or less.
    Type: Application
    Filed: September 24, 2019
    Publication date: March 26, 2020
    Inventors: Nao KOZAKA, Yuki WAKUSHIMA, Yoshitaka MIYAJIMA, Takeshi YANO, Chitae HASHIZUME
  • TEXTILE PRINTING INK JET INK COMPOSITION SET AND RECORDING METHOD
    Publication number: 20190249025
    Abstract: A textile printing ink jet ink composition set includes a textile printing ink jet ink composition having a hue angle ?h° within a range of 260° or more and 310° or less and a chroma C* of 45 or less, which are specified in the CIELAB color space, on a textile printing product after textile printing; and a textile printing ink jet ink composition having a hue angle ?h° within a range of 15° or more and 80° or less and a chroma C* of 65 or less, which are specified in the CIELAB color space, on a textile printing product after textile printing.
    Type: Application
    Filed: February 12, 2019
    Publication date: August 15, 2019
    Inventors: Yoshitaka MIYAJIMA, Yuki WAKUSHIMA, Nao KOZAKA, Hideki OGUCHI, Takuya SONOYAMA
  • RECORDING METHOD
    Publication number: 20190093283
    Abstract: An ink jet recording method performed on a fabric to which a hydrotropic agent is attached includes attaching an ink jet composition for textile printing including a metal complex salt dye, in which a hue angle ?h° defined in CIELAB color space on printed textiles after printing is in a range of 260° or more and 310° or less, to the fabric using an ink jet method, in which there is a region in which a value of a ratio of a mass of the metal complex salt dye with respect to a total mass of dyes included in the ink jet composition for textile printing is 0.6 or more and 1.0 or less, and a value of a ratio of mass of the metal complex salt dye with respect to a mass of the hydrotropic agent in the fabric is 0.2 or more and 1.0 or less.
    Type: Application
    Filed: September 25, 2018
    Publication date: March 28, 2019
    Inventors: Yoshitaka MIYAJIMA, Yuki WAKUSHIMA, Nao KOZAKA, Hideki OGUCHI, Takuya SONOYAMA