Patents by Inventor Mitsuya AOBA

Mitsuya AOBA 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).

  • Azo compound, ink containing azo compound, and display and electronic paper containing the ink
    Patent number: 9732226
    Abstract: An azo compound excellent in solubility in solvent and having a high absorbance coefficient is disclosed, as well as an ink containing the azo compound. Such an ink contains a solvent having a relative permittivity at 22° C. and at a measurement frequency of 1 kHz of 3 or less and having a solubility in water at 25° C. of 20 mg/L or less, and an azo compound.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: August 15, 2017
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yasushi Shiga, Mitsuya Aoba, Yuki Tanaka, Mio Ishida
  • Azo compound, ink containing azo compound, display including said ink and electronic paper
    Patent number: 9708498
    Abstract: The present invention relates to an ink comprising: a solvent having a relative permittivity, measured at a frequency of 1 kHz and a temperature of 22° C., of 3 or less and a solubility in water at 25° C. of 20 mg/L or less; and a specific azo compound.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: July 18, 2017
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yasushi Shiga, Tomoko Kadowaki, Yuki Tanaka, Mitsuya Aoba, Mio Ishida
  • AZO COMPOUND, INK CONTAINING AZO COMPOUND, DISPLAY INCLUDING SAID INK AND ELECTRONIC PAPER
    Publication number: 20150284581
    Abstract: The present invention relates to an ink comprising: a solvent having a relative permittivity, measured at a frequency of 1 kHz and a temperature of 22° C., of 3 or less and a solubility in water at 25° C. of 20 mg/L or less; and a specific azo compound.
    Type: Application
    Filed: May 27, 2015
    Publication date: October 8, 2015
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yasushi SHIGA, Tomoko KADOWAKI, Yuki TANAKA, Mitsuya AOBA, Mio ISHIDA
  • AZO COMPOUND, INK CONTAINING AZO COMPOUND, AND DISPLAY AND ELECTRONIC PAPER CONTAINING THE INK
    Publication number: 20150191601
    Abstract: An azo compound excellent in solubility in solvent and having a high absorbance coefficient is disclosed, as well as an ink containing the azo compound. Such an ink contains a solvent having a relative permittivity at 22° C. and at a measurement frequency of 1 kHz of 3 or less and having a solubility in water at 25° C. of 20 mg/L or less, and an azo compound.
    Type: Application
    Filed: January 30, 2015
    Publication date: July 9, 2015
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Yasushi SHIGA, Mitsuya AOBA, Yuki TANAKA, Mio ISHIDA