Patents by Inventor Shinya Nagatsuka

Shinya Nagatsuka 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).

  • HETEROCYCLIC COMPOUND OR SALT THEREOF, ACTIVE MATERIAL, ELECTROLYTIC SOLUTION AND REDOX FLOW BATTERY
    Publication number: 20230045245
    Abstract: The present disclosure relates to a heterocyclic compound represented by formula (1), (2) or (3), or a salt thereof. The present disclosure also relates to an active material containing at least one heterocyclic compound or a salt thereof described above, an electrolytic solution containing the active material, and a redox flow battery including the electrolytic solution.
    Type: Application
    Filed: September 20, 2022
    Publication date: February 9, 2023
    Inventors: Atsushi KAIHO, Shinya NAGATSUKA, Tomoya NAKAJIMA
  • Water-soluble azo compound or salt thereof, ink and recording medium
    Patent number: 11512203
    Abstract: A compound represented by formula (1) or a salt thereof, and an ink including the same.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: November 29, 2022
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Shinya Nagatsuka, Taku Iino, Hitomi Muto
  • WATER-SOLUBLE AZO COMPOUND OR SALT THEREOF, INK AND RECORDING MEDIUM
    Publication number: 20210292566
    Abstract: A compound represented by formula (1) or a salt thereof, and an ink including the same.
    Type: Application
    Filed: October 20, 2017
    Publication date: September 23, 2021
    Inventors: Shinya NAGATSUKA, Taku IINO, Hitomi MUTO
  • WATER-BASED BLACK INK COMPOSITION, INKJET RECORDING METHOD USING SAME, AND COLORED BODY
    Publication number: 20140299020
    Abstract: A water-based black ink composition which, when used in inkjet recording and writing tools, can provide recorded matter that exhibits excellent color development, light fastness, resistance to ozone gas, moisture and water, and accommodation characteristics to a sensor, and excellent solubility and therefore can be stably stored in the form of a recording fluid; and an inkjet recording method and a colored body, using the same. The water-based black ink composition contains C.I. Acid Black 2 as a colorant component. The inkjet recording method uses the water-based black ink composition, while the colored body is a body colored with the water-based black ink composition.
    Type: Application
    Filed: August 24, 2012
    Publication date: October 9, 2014
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Shinsuke Shimizu, Takahiko Matsui, Shinya Nagatsuka