Patents by Inventor Kei Ishimura

Kei Ishimura 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).

  • OPTICAL MEMBER
    Publication number: 20230072027
    Abstract: The present disclosure relates to an optical member comprising a plastic base, a hard coat layer disposed on the plastic base, and an antireflection film disposed on the hard coat layer, the antireflection film containing high refractive index layers and low refractive index layers that are alternately stacked, and the high refractive index layers and the low refractive index layers satisfying predetermined requirements.
    Type: Application
    Filed: October 31, 2022
    Publication date: March 9, 2023
    Inventor: Kei ISHIMURA
  • Optical component and method of manufacturing the same
    Patent number: 10371867
    Abstract: An optical component includes: a plastic base which has a convex surface and a concave surface; and a multilayer film which is disposed on at least the convex surface of the plastic base. The multilayer film has an average reflectivity of 2% to 10% over a wavelength range of 400 nm to 500 nm.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: August 6, 2019
    Assignee: NIKON-ESSILOR CO., LTD.
    Inventors: Masaoki Tomoda, Satoru Ito, Kei Ishimura, Hirotatsu Okumura