Patents by Inventor Yuka TAKEDOMI

Yuka TAKEDOMI 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).

  • Functional dyed spectacle lens
    Patent number: 10025117
    Abstract: A functional dyed lens for spectacles is obtained by dyeing at least one of the surfaces of an undyed plastic lens, and in the functional dyed lens, a dyeing density defined as a difference in luminous transmittance from the undyed plastic lens is 2% or more but 4% or less, and a difference in average transmittance from the undyed plastic lens in a wavelength region of 530 nm to 570 nm is 3% or more but 5% or less.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: July 17, 2018
    Assignee: NIKON-ESSILOR CO., LTD.
    Inventors: Yuka Takedomi, Yuko Kawamura
  • FUNCTIONAL DYED SPECTACLE LENS
    Publication number: 20160313574
    Abstract: A functional dyed lens for spectacles is obtained by dyeing at least one of the surfaces of an undyed plastic lens, and in the functional dyed lens, a dyeing density defined as a difference in luminous transmittance from the undyed plastic lens is 2% or more but 4% or less, and a difference in average transmittance from the undyed plastic lens in a wavelength region of 530 nm to 570 nm is 3% or more but 5% or less.
    Type: Application
    Filed: October 30, 2014
    Publication date: October 27, 2016
    Applicant: NIKON-ESSILOR CO., LTD.
    Inventors: Yuka TAKEDOMI, Yuko KAWAMURA