Patents by Inventor Kenzo Takeishi

Kenzo Takeishi 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 composition and liquid crystal display device
    Patent number: 10913895
    Abstract: A composition having a high ?n, a wide temperature range of a liquid crystal phase, low viscosity, good solubility at a low temperature, high resistivity, a high voltage holding ratio, and stability against heat and light; a liquid crystal composition containing the composition, the liquid crystal composition having a good lens effect and good chemical stability; a liquid crystal display device including the liquid crystal composition; and a liquid crystal lens including the liquid crystal composition. The liquid crystal composition contains one or two or more compounds represented by general formula (i) and one or two or more compounds represented by general formula (ii).
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: February 9, 2021
    Assignee: DIC CORPORATION
    Inventors: Haruki Ohishi, Kenzo Takeishi
  • LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE
    Publication number: 20180171229
    Abstract: The present invention aims to provide a composition having a high ?n, a wide temperature range of a liquid crystal phase, low viscosity, good solubility at a low temperature, high resistivity, a high voltage holding ratio, and stability against heat and light; a liquid crystal composition containing the composition, the liquid crystal composition having a good lens effect and good chemical stability; a liquid crystal display device including the liquid crystal composition; and a liquid crystal lens including the liquid crystal composition. The liquid crystal composition contains one or two or more compounds represented by general formula (i) and one or two or more compounds represented by general formula (ii).
    Type: Application
    Filed: June 28, 2016
    Publication date: June 21, 2018
    Applicant: DIC Corporation
    Inventors: Haruki Ohishi, Kenzo Takeishi
  • METHOD OF UNIFORMIZING OUTPUT LIGHT OF LIQUID CRYSTAL DISPLAY ELEMENT AND LIQUID CRYSTAL DISPLAY ELEMENT
    Publication number: 20160122644
    Abstract: The present invention provides a method of uniformizing output light from a liquid crystal display element and a liquid crystal display element in which output light is uniformized. The method of uniformizing output light of a liquid crystal display element includes: using a composition containing nanoparticles with an average particle diameter of 1 nm to 100 nm as a liquid crystal composition included in a liquid crystal layer in the liquid crystal display element having the liquid crystal layer interposed between a pair of substrates, and uniformizing light output from the liquid crystal display element. The present invention also provides a liquid crystal display element obtained by applying the method of uniformizing output light.
    Type: Application
    Filed: October 27, 2015
    Publication date: May 5, 2016
    Applicants: TOKYO UNIVERSITY OF SCIENCE FOUNDATION, DIC CORPORATION
    Inventors: Shunsuke Kobayashi, Yukihide Shiraishi, Naoki Toshima, Mitsuhiro Akimoto, Kenzo Takeishi, Haruyoshi Takatsu, Kunihiko Kotani