Patents by Inventor Sanga CHOI

Sanga CHOI 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 producing colorant composition, and colorant composition, colorant dispersion, photosensitive resin composition, color filter, liquid crystal display device produced using same
    Patent number: 11091644
    Abstract: The present specification relates to a method for preparing a colorant composition comprising dissolving a first xanthene-based dye having the same number of positive charges and negative charges and a second xanthene-based dye having more negative charges than positive charges by one or more in a first solvent; and precipitating the dissolved first xanthene-based dye and the dissolved second xanthene-based dye in a second solvent, and a colorant composition, a colorant dispersion, a photosensitive resin composition, a color filter and a liquid crystal display device.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: August 17, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Jongho Park, Dami Lee, Sanga Choi, Seung Jin Yang, Sang Gyun Park, Jae Joon Kim
  • METHOD FOR PRODUCING COLORANT COMPOSITION, AND COLORANT COMPOSITION, COLORANT DISPERSION, PHOTOSENSITIVE RESIN COMPOSITION, COLOR FILTER, LIQUID CRYSTAL DISPLAY DEVICE PRODUCED USING SAME
    Publication number: 20200040188
    Abstract: The present specification relates to a method for preparing a colorant composition comprising dissolving a first xanthene-based dye having the same number of positive charges and negative charges and a second xanthene-based dye having more negative charges than positive charges by one or more in a first solvent; and precipitating the dissolved first xanthene-based dye and the dissolved second xanthene-based dye in a second solvent, and a colorant composition, a colorant dispersion, a photosensitive resin composition, a color filter and a liquid crystal display device.
    Type: Application
    Filed: June 5, 2018
    Publication date: February 6, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Jongho PARK, Dami LEE, Sanga CHOI, Seung Jin YANG, Sang Gyun PARK, Jae Joon KIM