Patents by Inventor Kenji Matsumasa

Kenji Matsumasa 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).

  • Transparent conductive gas barrier laminate and device including the laminate
    Patent number: 11364704
    Abstract: A transparent conductive gas barrier laminate according to the present disclosure includes a transparent gas barrier film and a transparent conductive layer in this order from outside toward inside. In the laminate, the transparent gas barrier film has a b* value of more than 0 in a L*a*b* color system, and the transparent conductive layer contains a conductive polymer and has a b* value of less than 0 in the L*a*b* color system.
    Type: Grant
    Filed: September 7, 2019
    Date of Patent: June 21, 2022
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Ryo Shoda, Tomohiko Yamazaki, Kei Tsuruzoe, Kenji Matsumasa, Miki Fukugami, Kengo Okamura
  • Quantum dot protective film, and wavelength conversion sheet and backlight unit obtained by using the same
    Patent number: 10557970
    Abstract: A quantum dot protective film for sealing a phosphor, including: a protective layer having foreign matter, the maximum size of which is 100 to 500 ?m; and a coating layer formed on one surface of the protective layer, wherein the abundance ratio of the foreign matter with the maximum size of 100 to 500 ?m is 0.01 to 5.0 particles/m2 in the protective layer, and the haze value is 20% or higher.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: February 11, 2020
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Koji Murata, Kenji Matsumasa, Kengo Okamura, Satoshi Iwata, Masato Kurokawa
  • TRANSPARENT CONDUCTIVE GAS BARRIER LAMINATE AND DEVICE INCLUDING THE LAMINATE
    Publication number: 20200009829
    Abstract: A transparent conductive gas barrier laminate according to the present disclosure includes a transparent gas barrier film and a transparent conductive layer in this order from outside toward inside. In the laminate, the transparent gas barrier film has a b* value of more than 0 in a L*a*b* color system, and the transparent conductive layer contains a conductive polymer and has a b* value of less than 0 in the L*a*b* color system.
    Type: Application
    Filed: September 7, 2019
    Publication date: January 9, 2020
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Ryo SHODA, Tomohiko YAMAZAKI, Kei TSURUZOE, Kenji MATSUMASA, Miki FUKUGAMI, Kengo OKAMURA
  • QUANTUM DOT PROTECTIVE FILM, AND WAVELENGTH CONVERSION SHEET AND BACKLIGHT UNIT OBTAINED BY USING THE SAME
    Publication number: 20180024277
    Abstract: A quantum dot protective film for sealing a phosphor, including: a protective layer having foreign matter, the maximum size of which is 100 to 500 ?m; and a coating layer formed on one surface of the protective layer, wherein the abundance ratio of the foreign matter with the maximum size of 100 to 500 ?m is 0.01 to 5.0 particles/m2 in the protective layer, and the haze value is 20% or higher.
    Type: Application
    Filed: September 29, 2017
    Publication date: January 25, 2018
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Koji Murata, Kenji Matsumasa, Kengo Okamura, Satoshi Iwata, Masato Kurokawa