Patents by Inventor Chisato Okumura

Chisato Okumura 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).

  • Water-based ink for ink-jet recording, ink cartridge, and ink-jet recording apparatus
    Patent number: 9353277
    Abstract: A water-based ink for ink-jet recording includes a pigment; water; 1,2-alkanediol; a compound including an isothiazoline ring; and a surfactant represented by a general formula (1): In the general formula (1); each of R1, R2, R3, and R4 is one of a hydroxyl group, saturated fatty acid having a number of carbon atoms of 12 to 18 and unsaturated fatty acid having a number of carbon atoms of 12 to 18; and a, b, c, and d are identical with each other or different from each other, and a, b, c, and d are numbers to fulfill a+b+c+d?20.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: May 31, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Michiko Aoyama, Mitsunori Maeda, Chisato Okumura
  • Water-Based Ink for Ink-Jet Recording, Ink Cartridge, and Ink-Jet Recording Apparatus
    Publication number: 20150042733
    Abstract: A water-based ink for ink-jet recording includes a pigment; water; 1,2-alkanediol; a compound including an isothiazoline ring; and a surfactant represented by a general formula (1): In the general formula (1); each of R1, R2, R3, and R4 is one of a hydroxyl group, saturated fatty acid having a number of carbon atoms of 12 to 18 and unsaturated fatty acid having a number of carbon atoms of 12 to 18; and a, b, c, and d are identical with each other or different from each other, and a, b, c, and d are numbers to fulfill a+b+c+d?20.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 12, 2015
    Applicant: Brother Kogyo Kabushiki Kaisha
    Inventors: Michiko Aoyama, Mitsunori Maeda, Chisato Okumura