Patents Assigned to PILESTONE, INC.
  • Lenses and eyeglasses for correction of color blindness
    Patent number: 10901239
    Abstract: The present invention relates to optical devices for use by color blindness viewers and more particularly, to eyeglasses which improve the ability of a color blindness viewer to discriminate between different colored objects.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: January 26, 2021
    Assignee: PILESTONE, INC.
    Inventors: Tiangang Zhuang, Shangzi Zou, Ximin Yin