Patents by Inventor Yusuke KATSUKAKE

Yusuke KATSUKAKE 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).

  • OPTICAL ARTICLE
    Publication number: 20200142220
    Abstract: An optical article, such as a spectacle lens, includes, on a substrate, a photochromic layer containing a photochromic dye and a resin component, and a protective layer. The indentation hardness of the photochromic layer in the thickness direction is in a range from 0.1 to 10 mgf/?m2. The value defined by the indentation hardness of the protective layer in the thickness direction multiplied by the thickness of the protective layer is five or more times and nine thousand or less times the value defined by the indentation hardness of the photochromic layer in the thickness direction multiplied by the thickness of the photochromic layer.
    Type: Application
    Filed: December 26, 2019
    Publication date: May 7, 2020
    Applicant: HOYA LENS THAILAND LTD.
    Inventors: Takuya SHIMADA, Terufumi HAMAMOTO, Yusuke KATSUKAKE, Teruo YAMASHITA, Tsuyoshi WATANABE