Patents by Inventor Hyun-Sun RYU

Hyun-Sun RYU 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: 20250057767
    Abstract: The present invention relates to hybrid exosomes, a use of the same, and a preparation method of the same, and the hybrid exosomes provided from the present invention have excellent skin inflammation amelioration, skin wrinkle amelioration, skin moisturization efficacy, and skin regeneration efficacy compared to using hydrangea-derived exosomes and liposomes alone, and thus can be effectively utilized as a cosmetic composition containing the same as an active ingredient. In addition, the hybrid exosomes have better stability and biocompatibility compared to existing exosomes.
    Type: Application
    Filed: August 16, 2024
    Publication date: February 20, 2025
    Inventors: Ji Soo Ryu, A Reum Jang, Jae Yong Seo, Hyun Dae Cho, Hee Cheol Kang, Mi Jung Kim, En Young Jeong, Hye Sun Park, Kwan Soo Hong, Hyunseung Lee
  • Patent number: 12181755
    Abstract: A variable transmittance optical stack and a manufacturing method for the same, and a smart window including the same are proposed, and the variable transmittance optical stack includes a first polarizing plate, a first electrode layer formed on one surface of the first polarizing plate, a second polarizing plate opposing the first polarizing plate, a second electrode layer formed on one surface of the second polarizing plate, and opposing the first electrode layer, and a liquid crystal layer provided between the first electrode layer and the second electrode layer, wherein the first electrode layer and the second electrode layer includes conductive polymers, and the first electrode layer and the second electrode layer have physical alignment structures on at least a part of regions thereof by a rubbing manner.
    Type: Grant
    Filed: April 18, 2024
    Date of Patent: December 31, 2024
    Assignee: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Hyung-Hun Kim, Jin-Ho Kim, Hyun-Sun Ryu, Sub Heo
  • Publication number: 20240353718
    Abstract: A variable transmittance optical stack and a manufacturing method for the same, and a smart window including the same are proposed, and the variable transmittance optical stack includes a first polarizing plate, a first electrode layer formed on one surface of the first polarizing plate, a second polarizing plate opposing the first polarizing plate, a second electrode layer formed on one surface of the second polarizing plate, and opposing the first electrode layer, and a liquid crystal layer provided between the first electrode layer and the second electrode layer, wherein the first electrode layer and the second electrode layer includes conductive polymers, and the first electrode layer and the second electrode layer have physical alignment structures on at least a part of regions thereof by a rubbing manner.
    Type: Application
    Filed: April 18, 2024
    Publication date: October 24, 2024
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Hyung-Hun KIM, Jin-Ho KIM, Hyun-Sun RYU, Sub HEO
  • Publication number: 20240345302
    Abstract: The present invention relates to a variable transmittance optical laminate and a manufacturing method therefor, a smart window comprising same, and a door and window for an automobile and a building to which same is applied.
    Type: Application
    Filed: September 20, 2022
    Publication date: October 17, 2024
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventor: Hyun-Sun RYU
  • Publication number: 20240288729
    Abstract: A variable transmittance optical stack, a manufacturing method therefor, a smart window including the same, and windows for an automobile or a building using the same are proposed.
    Type: Application
    Filed: January 18, 2024
    Publication date: August 29, 2024
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Hyun-Seong KIM, Jin-Ho KIM, Hyun-Sun RYU, Ju-Seob CHOI
  • Publication number: 20240288615
    Abstract: A variable transmittance optical stack a manufacturing method therefor, a smart window including the same, and windows for an automobile or a building using the same are proposed.
    Type: Application
    Filed: January 18, 2024
    Publication date: August 29, 2024
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Hyun-Sun RYU, Jin-Ho KIM, Hyun-Seong KIM, Ju-Seob CHOI, Sub HEO