Patents by Inventor Kuk-Youn Ju

Kuk-Youn Ju 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).

  • COMPOSITIONS COMPRISING MELANIN, AND METHODS OF PREPARING AND USES THEREOF
    Publication number: 20200215208
    Abstract: The invention is directed to compositions comprising disassembled, stacked melanin oligomers, and methods of preparing and using such compositions.
    Type: Application
    Filed: July 25, 2017
    Publication date: July 9, 2020
    Inventors: Kuk-Youn JU, Jin-Kyu LEE, Jung Hee LEE, Won Jae LEE
  • Contrast agent for nuclear magnetic resonance imaging comprising melanin nanoparticles stably dispersed in water
    Patent number: 9808540
    Abstract: The present invention relates to a contrast agent for nuclear magnetic resonance imaging, and more particularly, to a contrast agent for nuclear magnetic resonance imaging containing melanin nanoparticles having a uniform shape and size, thereby providing good dispersibility in water, no cell toxicity, and a long retention time in vivo.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: November 7, 2017
    Assignee: Melanis Co., Ltd.
    Inventors: Jin Kyu Lee, Kuk Youn Ju, Jung Hee Lee
  • Contrast-Enhancing Agent for Nuclear Magnetic Resonance Imaging Comprising Melanin Nanoparticles Stably Dispersed in Water
    Publication number: 20150139914
    Abstract: The present invention relates to a contrast agent for nuclear magnetic resonance imaging, and more particularly, to a contrast agent for nuclear magnetic resonance imaging containing melanin nanoparticles having a uniform shape and size, thereby providing good dispersibility in water, no cell toxicity, and a long retention time in vivo.
    Type: Application
    Filed: April 9, 2013
    Publication date: May 21, 2015
    Inventors: Jin Kyu Lee, Kuk Youn Ju, Jung Hee Lee
  • Nano-sized melanin particles and method of producing same
    Patent number: 8937149
    Abstract: The present invention provides nano-sized particles of melanin, and the method for formation of the melanin particles comprise the following steps: adding a base to a dopamine.H+X?-containing solution (wherein H+X? is an acid) and allowing an acid-base neutralization reaction; and forming nano-sized particles of melanin by controlling the addition of nucleic dopamine.H+X? (a) to base (b) at a ratio of a:b=1:0.1-1, and allow concurrent or consecutive formation of melanin by oxidation curing of the dopamine in air (polymerization). The manufacturing method according to the present invention can produce nano-sized melanin particles in a short period of time. Furthermore, the nano-sized melanin particles made according to the present invention are distinctive from conventional solvents containing dispersions of natural melanin and synthetic melanin, and have excellent application in various fields.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: January 20, 2015
    Assignee: SNU R&DB Foundation
    Inventors: Jin Kyu Lee, Kuk Youn Ju
  • Superhydrophobic polymer fabrication
    Patent number: 8455084
    Abstract: A superhydrophobic polymer fabrication is provided. According to one method for preparing a superhydrophobic polymer fabrication, the superhydrophobic polymer fabrication can be fabricated quickly and easily, and the superhydrophobic surface can be repeatedly imprinted using a template, so that mass production of the superhydrophobic polymer fabrication over a large area can be economically implemented.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: June 4, 2013
    Assignee: Seoul National University Research & Development Business Foundation (SNU R&DB Foundation)
    Inventors: Jin-Kyu Lee, Yuwon Lee, Kuk-Youn Ju
  • NANO-SIZED MELANIN PARTICLES AND METHOD OF PRODUCING SAME
    Publication number: 20120205590
    Abstract: The present invention provides nano-sized particles of melanin, and the method for formation of the melanin particles comprise the following steps: adding a base to a dopamine.H+X?-containing solution (wherein H+X? is an acid) and allowing an acid-base neutralization reaction; and forming nano-sized particles of melanin by controlling the addition of nucleic dopamine.H+X? to base (b) at a ratio of a:b=1:0.1-1, and allow concurrent or consecutive formation of melanin by oxidation curing of the dopamine in air (polymerization). The manufacturing method according to the present invention can produce nano-sized melanin particles in a short period of time. Furthermore, the nano-sized melanin particles made according to the present invention are distinctive from conventional solvents containing dispersions of natural melanin and synthetic melanin, and have excellent application in various fields.
    Type: Application
    Filed: October 22, 2010
    Publication date: August 16, 2012
    Applicant: SNU R&DB FOUNDATION
    Inventors: Jin Kyu Lee, Kuk Youn Ju
  • SUPERHYDROPHOBIC POLYMER FABRICATION
    Publication number: 20110097534
    Abstract: A superhydrophobic polymer fabrication is provided.
    Type: Application
    Filed: January 6, 2011
    Publication date: April 28, 2011
    Applicant: Seoul National University Research & Development Business Foundation (SNU R&DB FOUNDATION)
    Inventors: Jin-Kyu Lee, Yuwon Lee, Kuk-Youn Ju
  • Superhydrophobic polymer fabrication
    Patent number: 7887736
    Abstract: A superhydrophobic polymer fabrication is provided. According to one method for preparing a superhydrophobic polymer fabrication, the superhydrophobic polymer fabrication can be fabricated quickly and easily, and the superhydrophobic surface can be repeatedly imprinted using a template, so that mass production of the superhydrophobic polymer fabrication over a large area can be economically implemented.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: February 15, 2011
    Inventors: Jin-Kyu Lee, Yuwon Lee, Kuk-Youn Ju
  • SUPERHYDROPHOBIC PLYMER FABRICATION
    Publication number: 20090246473
    Abstract: A superhydrophobic polymer fabrication is provided.
    Type: Application
    Filed: September 19, 2008
    Publication date: October 1, 2009
    Applicant: Seoul National University Research & Development Business Foundation (SNU R&DB FOUNDATION)
    Inventors: Jin-Kyu Lee, Yuwon Lee, Kuk-Youn Ju