Patents by Inventor Yeon Ok Kwon

Yeon Ok Kwon 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).

  • Method for manufacturing polarizing plate
    Patent number: 11975500
    Abstract: Provided is a method for manufacturing a polarizing plate, comprising a step of irradiating an optical laminate with ultraviolet rays having an emission wavelength band of 380 nm to 410 nm. The optical laminate sequentially comprises a first base film, a first adhesive layer, a linear polarizer, a second adhesive layer, a second base film and a reverse dispersion liquid crystal layer. The first adhesive layer and the second adhesive layer each comprise a photosensitizer for initiating a curing reaction in a wavelength band of 350 nm to 410 nm, and the ultraviolet rays are irradiated on the first base film side of the optical laminate.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: May 7, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Young Sik Kim, Jin Yong Park, Yeon Ok Jung, Min Woo Hwang, Jung Geun Kwon, Yong Su Ju, Chan Youn Kim, Ji Hoon Park, Seong Min Lim
  • Teether
    Patent number: D904628
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: December 8, 2020
    Assignee: UPIS CO., LTD.
    Inventor: Yeon Ok Kwon
  • Feeding bottle
    Patent number: D914895
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: March 30, 2021
    Assignee: UPIS CO., LTD.
    Inventor: Yeon Ok Kwon
  • Straw for feeding bottle
    Patent number: D921208
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: June 1, 2021
    Assignee: UPIS Co., Ltd.
    Inventor: Yeon Ok Kwon
  • Nipple for feeding bottle
    Patent number: D934437
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: October 26, 2021
    Assignee: UPIS CO., LTD.
    Inventor: Yeon Ok Kwon