Patents by Inventor Kwan-Woo Ko

Kwan-Woo Ko 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 PREPARING PHOTORESPONSIVE SELF-POWERED ELECTROCHROMIC PRECURSOR, METHOD FOR FABRICATING PHOTORESPONSIVE SELF-POWERED ELECTROCHROMIC DEVICE AND PHOTORESPONSIVE SELF-POWERED ELECTROCHROMIC DEVICE FABRICATED BY THE FABRICATION METHOD
    Publication number: 20220220368
    Abstract: Disclosed are a method for producing a photoresponsive automatic color change precursor and a photoresponsive automatic color change element, and a photoresponsive automatic color change element produced thereby. A method for producing a photoresponsive automatic color change precursor and a photoresponsive automatic color change element, and a photoresponsive automatic color change element produced thereby according to the present invention are characterized in that the method includes a step for adding or adsorbing a ligand material to a reducing color change material, a semiconductor material, or an electron transfer material to produce a reducing color change mixture that changes color through a photoresponse.
    Type: Application
    Filed: April 10, 2018
    Publication date: July 14, 2022
    Inventors: Chi-hwan HAN, Sung-jun HONG, Kwan Woo KO, Ji Su HAN
  • Nanoparticle having imidazolium salt chemically bound thereto, method of preparing the same, and nanogel electrolyte for dye-sensitive solar cell comprising the same
    Patent number: 8808565
    Abstract: A nanoparticle to which an imidazolium salt is chemically bonded, a method of preparing the same, and a nanogel electrolyte for dye-sensitized solar cells comprising the same are disclosed. The present invention may provide a dye-sensitive solar cell with good economic feasibility, stability and photoelectric conversion efficiency using the nanogel electrolyte, wherein the nanogel electrolyte may reduce the concentration of ionic liquids and preparation costs while improving economic feasibility, long term stability, and photoelectric conversion efficiency.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: August 19, 2014
    Assignee: Korea Institute of Energy Research
    Inventors: Chi-Hwan Han, Tae-Yeon Cho, Sang-Hoon Bae, Kwan-Woo Ko, Jae-Hyung Bak
  • Nanoparticle Having Imidazolium Salt Chemically Bound Thereto, Method of Preparing the Same, and Nanogel Electrolyte for Dye-Sensitive Solar Cell Comprising the Same
    Publication number: 20130020523
    Abstract: A nanoparticle to which an imidazolium salt is chemically bonded, a method of preparing the same, and a nanogel electrolyte for dye- sensitized solar cells comprising the same are disclosed. The present invention may provide a dye-sensitive solar cell with good economic feasibility, stability and photoelectric conversion efficiency using the nanogel electrolyte, wherein the nanogel electrolyte may reduce the concentration of ionic liquids and preparation costs while improving economic feasibility, long term stability, and photoelectric conversion efficiency.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 24, 2013
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Chi-Hwan Han, Tae-Yeon Cho, Sang-Hoon Bae, Kwan-Woo Ko, Jae-Hyung Bak