Patents by Inventor Toshiyuki llDA

Toshiyuki llDA 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).

  • RETARDATION FILM, AND CIRCULARLY POLARIZING PLATE AND IMAGE DISPLAY DEVICE EACH USING THE SAME
    Publication number: 20160216408
    Abstract: An object of the present invention is to provide a retardation film succeeded in solving those conventional problems, that is, a retardation film insusceptible to color dropout or color shift even under environment of severe temperature or humidity conditions and capable of being produced by a melt film-forming method. The retardation film of the present invention satisfies the relationships of the following formulae (A) and (B): 0.7<R1(450)/R1(550)<1??Formula (A): |R2(450)/R2(550)?R1(450)/R1(550)|<0.
    Type: Application
    Filed: April 4, 2016
    Publication date: July 28, 2016
    Applicants: MITSUBISHI CHEMICAL CORPORATION, NITTO DENKO CORPORATION
    Inventors: Tomohiko TANAKA, Masashi YOKOGI, Nao MURAKAMI, Toshiyuki llDA