Patents by Inventor Hiroshi Shodai

Hiroshi Shodai 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 PIGMENT DISPERSION AND TECHNOLOGY RELATED THERETO
    Publication number: 20220073776
    Abstract: Providing a white pigment dispersion that shows good storage stability because the white pigment contained therein is less likely to sediment, an ink composition comprising the white pigment dispersion, and a method of image formation using the ink composition.
    Type: Application
    Filed: November 12, 2021
    Publication date: March 10, 2022
    Inventors: Daisuke INOUE, Hiroshi SHODAI, Tomohiro MIZUHARA
  • Inkjet printing ink
    Patent number: 8857966
    Abstract: An inkjet printing ink having properties of crosslinking and being fixed on a fiber by heating, characterized in that in an ink composition consisting of (A) a pigment dispersion having a mean particle diameter of 200 nm or less and a maximum particle diameter of 500 nm or less, consisting of a pigment, a water-soluble pigment dispersant and a hydrophilic solvent, (B) a water-soluble fixing agent, and (C) a crosslinking agent, the water-soluble pigment dispersant in (A) is a specific emulsion polymer neutralized by a basic substance; the water-soluble fixing agent (B) is the one having a crosslinking functional group; and the crosslinking agent (C) is the one having a functional group that crosslinks the crosslinking functional group of the water-soluble pigment dispersant in (A) with the crosslinking functional group of the water-soluble fixing agent (B) at a temperature of 100° C. or more.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: October 14, 2014
    Assignee: Matsui Shikiso Chemical Co., Ltd.
    Inventors: Yosuke Kitagawa, Daisuke Inoue, Hiroshi Shodai
  • INKJET PRINTING INK
    Publication number: 20120306976
    Abstract: An inkjet printing ink having properties of crosslinking and being fixed on a fiber by heating, characterized in that in an ink composition consisting of (A) a pigment dispersion having a mean particle diameter of 200 nm or less and a maximum particle diameter of 500 nm or less, consisting of a pigment, a water-soluble pigment dispersant and a hydrophilic solvent, (B) a water-soluble fixing agent, and (C) a crosslinking agent, the water-soluble pigment dispersant in (A) is a specific emulsion polymer neutralized by a basic substance; the water-soluble fixing agent (B) is the one having a crosslinking functional group; and the crosslinking agent (C) is the one having a functional group that crosslinks the crosslinking functional group of the water-soluble pigment dispersant in (A) with the crosslinking functional group of the water-soluble fixing agent (B) at a temperature of 100° C. or more.
    Type: Application
    Filed: January 6, 2012
    Publication date: December 6, 2012
    Applicant: Matsui Shikiso Chemical Co., Ltd.
    Inventors: Yosuke Kitagawa, Daisuke Inoue, Hiroshi Shodai