Patents by Inventor Changmin Hyun

Changmin Hyun 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).

  • Publication number: 20240134272
    Abstract: Provided are a method for preparing a pixel defining layer comprising applying and coating, pre-baking, exposing to light, developing, and post-baking of a photosensitive composition containing a colorant having a pigment with an average particle size of 100 nm or less, wherein the coated film generated after the post-baking has an optical density of 0.8/?m to 2.0/?m, a roughness of 3.0 nm or less, and no residue; and an organic light emitting display device comprising the pixel defining layer obtained by the method which has improved display reliability and lifetime as well as vivid colors.
    Type: Application
    Filed: October 5, 2023
    Publication date: April 25, 2024
    Applicant: DUK SAN NEOLUX CO., LTD.
    Inventors: Jun BAE, Changmin LEE, Yeon Soo LEE, Jin Hyun KIM, Ju Cheol KWON, Hak Young LEE, Soung Yun MUN, Kyung Soo KIM
  • Patent number: 11952461
    Abstract: Disclosed are a novel monofunctional polyethylene glycol (PEG) and derivatives thereof. More particularly, one terminal of each of the monofunctional polyethylene glycol and derivatives thereof is modified with a siloxy group. The novel monofunctional polyethylene glycol (PEG) offers an alternative to methoxy polyethylene glycol.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: April 9, 2024
    Assignee: SUNBIO, INC.
    Inventors: Kwang Nho, Minjung Ahn, Changmin Hyun, Junghoon Lee
  • Publication number: 20240085788
    Abstract: An object of the present disclosure is to improve display reliability and lifetime as well as vivid colors. When there remain residues in the washing part due to incomplete removal during the developing step, it can cause dark spots or pixel off due to the residues, and thus residue-free pixels can be formed by optimizing the temperature and time for developing. Additionally, when the amount of outgas in the panel after post-baking is 15 ppm or more, it may cause a reduction in luminance and lifetime due to pixel shrinkage. Therefore, in order to minimize the amount of outgas after completion of the post-baking process, the generation of outgas in the panel state can be minimized by generating sufficient fume in the post-baking step, in addition to forming clean pixels in the developing step.
    Type: Application
    Filed: August 16, 2023
    Publication date: March 14, 2024
    Applicant: DUK SAN NEOLUX CO., LTD.
    Inventors: Jun BAE, Changmin LEE, Yeon Soo LEE, Jun Ki KIM, Jin Hyun KIM, Ju Cheol KWON, Soung Yun MUN, Kyung Soo KIM
  • Publication number: 20220296685
    Abstract: A uricase derivative co-conjugated with fatty acid-linked polyethylene glycol derivatives and optionally, alkoxy polyethylene glycol derivatives is presented. The uricase may be intramolecularly crosslinked. The uricase derivative of the present invention is intended for use as a treatment for gout or hyperuricemia.
    Type: Application
    Filed: March 16, 2022
    Publication date: September 22, 2022
    Inventors: Kwang Nho, Minjung Ahn, Byunghee Sohn, Changmin Hyun, Junghoon Lee
  • Publication number: 20220298302
    Abstract: Disclosed are a novel monofunctional polyethylene glycol (PEG) and derivatives thereof. More particularly, one terminal of each of the monofunctional polyethylene glycol and derivatives thereof is modified with a siloxy group. The novel monofunctional polyethylene glycol (PEG) offers an alternative to methoxy polyethylene glycol.
    Type: Application
    Filed: March 22, 2021
    Publication date: September 22, 2022
    Inventors: Kwang NHO, Minjung AHN, Changmin HYUN, Junghoon LEE
  • Publication number: 20210401949
    Abstract: The invention relates to hemoglobin derivative, particularly hemoglobin which is co-conjugated with both fatty acid-linked polyethylene glycol (FA-PEG) derivatives and alkoxy polyethylene glycol (alkoxy-PEG) derivatives, and a method for making such hemoglobin derivative. Various embodiments of the invention include crosslinked hemoglobin which is co-conjugated with both FA-PEG derivatives and alkoxy-PEG derivatives. Such hemoglobin derivative according to the invention exhibit non-toxicity and extended intravascular retention time.
    Type: Application
    Filed: June 24, 2021
    Publication date: December 30, 2021
    Inventors: Kwang Nho, Minjung Ahn, Changmin Hyun, JungHun Lee
  • Patent number: 10882954
    Abstract: Disclosed are a novel monofunctional polyethylene glycol (PEG) and derivatives thereof. More particularly, one terminal of each of the monofunctional polyethylene glycol and derivatives thereof is modified with a tertiary alkoxy group.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: January 5, 2021
    Assignee: SUNBIO INC.
    Inventors: Kwang Nho, Min Jung Ahn, Junghoon Lee, Changmin Hyun
  • Publication number: 20200325274
    Abstract: Disclosed are a novel monofunctional polyethylene glycol (PEG) and derivatives thereof. More particularly, one terminal of each of the monofunctional polyethylene glycol and derivatives thereof is modified with a tertiary alkoxy group.
    Type: Application
    Filed: April 11, 2019
    Publication date: October 15, 2020
    Applicant: SUNBIO INC.
    Inventors: Kwang Nho, Min Jung Ahn, Junghoon Lee, Changmin Hyun
  • Patent number: 6828401
    Abstract: The present invention relates to novel synthetic methods for PEG-maleimide derivatives, specifically, novel synthetic methods for PEG-maleimide. The final products thereof are useful as a pegylation reagent in the field of bioengineering and the medicinal field or the preparation of medical appliances and by conjugating with certain moieties or specific domains of polysaccharides and biological proteins such as antibodies as a bio-compatible or bio-degradable polymer.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: December 7, 2004
    Assignee: SunBio Inc.
    Inventors: Kwang Nho, Changmin Hyun, Junghun Lee, Youngkyoung Pak
  • Publication number: 20040225097
    Abstract: The present invention relates to novel synthetic methods for PEG-maleimide derivatives, specifically, novel synthetic methods for PEG-maleimide. The final products thereof are useful as a pegylation reagent in the field of bioengineering and the medicinal field or the preparation of medical appliances and by conjugating with certain moieties or specific domains of polysaccharides and biological proteins such as antibodies as a bio-compatible or bio-degradable polymer.
    Type: Application
    Filed: October 29, 2003
    Publication date: November 11, 2004
    Inventors: Kwang Nho, Changmin Hyun, Junghun Lee, Youngkyoung Pak