Patents by Inventor Nobuhiko KUSUMOTO

Nobuhiko KUSUMOTO 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).

  • Patent number: 11446899
    Abstract: Provided is a transparent film having advantages such as excellent heat resistance, a birefringence that is not easily affected by the film forming conditions, and being uniform. According to one embodiment, there is provided a transparent film including a resin composition that includes a polycarbonate resin (A) having a structural unit represented by formula (1) and having a photoelastic coefficient of 80×10?12 m2/N or less.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: September 20, 2022
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Nobuhiko Kusumoto, Keisuke Konomi, Madoka Yamaguchi
  • Publication number: 20210206966
    Abstract: Provided is a transparent film having advantages such as excellent heat resistance, a birefringence that is not easily affected by the film forming conditions, and being uniform. According to one embodiment, there is provided a transparent film including a resin composition that includes a polycarbonate resin (A) having a structural unit represented by formula (1) and having a photoelastic coefficient of 80×10?12 m2/N or less.
    Type: Application
    Filed: May 31, 2019
    Publication date: July 8, 2021
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Nobuhiko KUSUMOTO, Keisuke KONOMI, Madoka YAMAGUCHI