Patents by Inventor Takashi Ohkita

Takashi Ohkita 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).

  • Photocurable composition, method for producing concave-convex structure, method for forming fine concave-convex pattern, and concave-convex structure
    Patent number: 11958971
    Abstract: Provided is a photocurable composition used for forming a resin layer of a concave-convex structure including a substrate and a resin layer provided on the substrate and having fine concavities and convexities formed on a surface thereof. A cured film of the photocurable composition has a surface free energy of 15 mJ/m2 to 40 mJ/m2 as measured based on the Kitazaki-Hata theory and a hardness of 0.05 GPa to 0.5 GPa as measured using a nanoindenter.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: April 16, 2024
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Takashi Oda, Hisanori Ohkita, Hiroko Wachi, Shingo Yamamoto
  • Display screen burn prevention method
    Publication number: 20050204313
    Abstract: The display position of an image on a display screen is gradually moved in an oblique direction in a specified display mode. Accordingly, display screen burn is prevented.
    Type: Application
    Filed: March 7, 2005
    Publication date: September 15, 2005
    Inventors: Kenichi Enoki, Hideo Naganuma, Takashi Ohkita, Noriyuki Kamada