Patents by Inventor Takehiko KANBARA

Takehiko KANBARA 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).

  • Liquid crystal aligning agent for photoalignment, liquid crystal alignment film and liquid crystal display device using it, and diamine and polymer
    Patent number: 10968392
    Abstract: Provided are a liquid crystal alignment film capable of being given anisotropy through photoalignment and stable to light, and a liquid crystal display device capable of keeping a high voltage holding ratio without degradation of display quality even when exposed to strong light for a long period of time. To provide these, used is a liquid crystal aligning agent for photoalignment which contains a polymer having a structural unit containing a photoreactive structure and in which the structural unit containing a photoreactive structure undergoes chemical reaction by heating.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: April 6, 2021
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yohei Koseki, Takehiko Kanbara
  • LIQUID CRYSTAL ALIGNING AGENT FOR PHOTOALIGNMENT, LIQUID CRYSTAL ALIGNMENT FILM AND LIQUID CRYSTAL DISPLAY DEVICE USING IT, AND DIAMINE AND POLYMER
    Publication number: 20190127643
    Abstract: Provided are a liquid crystal alignment film capable of being given anisotropy through photoalignment and stable to light, and a liquid crystal display device capable of keeping a high voltage holding ratio without degradation of display quality even when exposed to strong light for a long period of time. To provide these, used is a liquid crystal aligning agent for photoalignment which contains a polymer having a structural unit containing a photoreactive structure and in which the structural unit containing a photoreactive structure undergoes chemical reaction by heating.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 2, 2019
    Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yohei KOSEKI, Takehiko KANBARA