Patents by Inventor Kentarou OOISHI

Kentarou OOISHI 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).

  • Polyhalogenated zinc phthalocyanine, polyhalogenated zinc phthalocyanine pigment, and color filter including pixel portion containing polyhalogenated zinc phthalocyanine pigment
    Patent number: 11261332
    Abstract: There is provided a polyhalogenated zinc phthalocyanine having good tinting strength and being capable of achieving higher brightness when the polyhalogenated zinc phthalocyanine is used in pixel portions of color filters. The object is achieved by providing the polyhalogenated zinc phthalocyanine represented by general formula 1: (wherein in general formula 1, X1 to X16 are each independently a chlorine atom, a bromine atom, or a hydrogen atom), in which a value obtained by dividing the maximum ion intensity, measured by mass spectrometry, in an m/z range of 1,780 (inclusive) to 1,820 (exclusive) by the maximum ion intensity in the m/z range of 1,820 (inclusive) to 1,860 (inclusive) is 1.00 or less.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: March 1, 2022
    Assignee: DIC Corporation
    Inventors: Kentarou Ooishi, Hideo Kaichi, Akira Kimura
  • POLYHALOGENATED ZINC PHTHALOCYANINE, POLYHALOGENATED ZINC PHTHALOCYANINE PIGMENT, AND COLOR FILTER INCLUDING PIXEL PORTION CONTAINING POLYHALOGENATED ZINC PHTHALOCYANINE PIGMENT
    Publication number: 20210277247
    Abstract: There is provided a polyhalogenated zinc phthalocyanine having good tinting strength and being capable of achieving higher brightness when the polyhalogenated zinc phthalocyanine is used in pixel portions of color filters. The object is achieved by providing the polyhalogenated zinc phthalocyanine represented by general formula 1: (wherein in general formula 1, X1 to X16 are each independently a chlorine atom, a bromine atom, or a hydrogen atom), in which a value obtained by dividing the maximum ion intensity, measured by mass spectrometry, in an m/z range of 1,780 (inclusive) to 1,820 (exclusive) by the maximum ion intensity in the m/z range of 1,820 (inclusive) to 1,860 (inclusive) is 1.00 or less.
    Type: Application
    Filed: September 7, 2017
    Publication date: September 9, 2021
    Applicant: DIC Corporation
    Inventors: Kentarou OOISHI, Hideo KAICHI, Akira KIMURA