Patents by Inventor Hisamitsu ARAKAWA

Hisamitsu ARAKAWA 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).

  • White ink, ink set, and recording method
    Patent number: 11401430
    Abstract: A white ink containing a white pigment, a polycarbonate urethane resin, a polyether urethane resin, and water; and a recording method using the white ink. An ink set provided with the white ink and at least one color ink, the color ink being an aqueous ink containing a coloring agent, the white ink and the color ink differing in surface tension at 25° C. by ±0-3 mN/m; and a recording method using the ink set.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: August 2, 2022
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Akitsu Hanazato, Hisamitsu Arakawa, Yuta Hagiwara, Motohiro Seki
  • WHITE INK, INK SET, AND RECORDING METHOD
    Publication number: 20210363367
    Abstract: A white ink containing a white pigment, a polycarbonate urethane resin, a polyether urethane resin, and water; and a recording method using the white ink. An ink set provided with the white ink and at least one color ink, the color ink being an aqueous ink containing a coloring agent, the white ink and the color ink differing in surface tension at 25° C. by ±0-3 mN/m; and a recording method using the ink set.
    Type: Application
    Filed: March 25, 2019
    Publication date: November 25, 2021
    Inventors: Akitsu Hanazato, Hisamitsu ARAKAWA, Yuta HAGIWARA, Motohiro SEKI