Patents by Inventor Shohei TAKAHAGI

Shohei TAKAHAGI 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).

  • Polymer film, and light diffusion film comprising same for display
    Patent number: 10509252
    Abstract: Provided is a polymer film which can eliminate both moire and glitter and is suitable for use as a diffusion film. The above-mentioned problems are solved with a polymer film, a surface of which has an arithmetic average roughness Ra of 0.63-1.80 ?m, a root mean square roughness Rq of 0.76-2.40 ?m, and an average height Rc of roughness-curve elements of 2.45-7.20 ?m.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: December 17, 2019
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Takeshi Onishi, Masahide Takeda, Shotaro Ohno, Shohei Takahagi
  • Light diffusion film
    Patent number: 10416360
    Abstract: One embodiment of the present invention provides a light diffusion film, including: 100 parts by mass of a polycarbonate resin (A); 1 to 10 parts by mass of organic fine particles (B); and 0.01 to 0.5 parts by mass of inorganic fine particles (C), wherein the inorganic fine particles (C) have an average particle size of less than 1 ?m and a refractive index at a wavelength of 589 nm of 2.00 or more.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: September 17, 2019
    Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventor: Shohei Takahagi
  • POLYMER FILM, AND LIGHT DIFFUSION FILM COMPRISING SAME FOR DISPLAY
    Publication number: 20180136510
    Abstract: Provided is a polymer film which can eliminate both moire and glitter and is suitable for use as a diffusion film. The above-mentioned problems are solved with a polymer film, a surface of which has an arithmetic average roughness Ra of 0.63-1.80 ?m, a root mean square roughness Rq of 0.76-2.40 ?m, and an average height Rc of roughness-curve elements of 2.45-7.20 ?m.
    Type: Application
    Filed: June 2, 2016
    Publication date: May 17, 2018
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Takeshi ONISHI, Masahide TAKEDA, Shotaro OHNO, Shohei TAKAHAGI
  • LIGHT DIFFUSION FILM
    Publication number: 20170329057
    Abstract: One embodiment of the present invention provides a light diffusion film, including: 100 parts by mass of a polycarbonate resin (A); 1 to 10 parts by mass of organic fine particles (B); and 0.01 to 0.5 parts by mass of inorganic fine particles (C), wherein the inorganic fine particles (C) have an average particle size of less than 1 ?m and a refractive index at a wavelength of 589 nm of 2.00 or more.
    Type: Application
    Filed: October 15, 2015
    Publication date: November 16, 2017
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventor: Shohei TAKAHAGI