Patents by Inventor Ji Hyun Ryu

Ji Hyun 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: 20220265415
    Abstract: The tissue regeneration platform of one embodiment may exhibit excellent biocompatibility and tissue culture property on various supports, comprising a support and a coating layer disposed on the support, and comprising a hyaluronic acid-catechol compound.
    Type: Application
    Filed: June 17, 2020
    Publication date: August 25, 2022
    Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, WONKWANG UNIVERSITY CENTER FOR INDUSTRY-ACADEMY COOPERATION
    Inventors: Kyung Pyo PARK, Sang Woo LEE, Ji Hyun RYU
  • Patent number: 10923725
    Abstract: A method for producing an anode for a lithium metal secondary battery includes coating a thin film comprised of Nb2C, Ti2C or Ti3C2 on a substrate; providing a lithium metal electrode; and laminating the thin film to a surface of the lithium metal electrode. Coating is accomplished by providing a dispersion of a powder comprising Nb2C, Ti2C or Ti3C2; and coating the dispersion on the substrate by Langmuir-Blodgett scooping (LBS). The method may further include, prior to providing the dispersion, obtaining the powder by etching a MAX phase structure represented by Formula 1, Formula 2 or Formula 3 below: Nb2AC??(1); Ti2AC??(2); and Ti3AC2??(3), where A is a metal selected from among Group IIIA elements, Group IVA elements, Cd, and combinations thereof. The method may further include, after laminating the thin film, removing the substrate from the thin film.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: February 16, 2021
    Assignee: Korea Institute of Science and Technology
    Inventors: Won Il Cho, Mun Sek Kim, Ji Hyun Ryu, Seung Hun Lee
  • Patent number: 10804567
    Abstract: Disclosed is an electrolyte for a lithium metal secondary battery and a lithium metal secondary battery including the same. An electrolyte system is intended to maintain the energy density of a secondary battery based on a lithium metal negative electrode and to extend the life of a battery. Particularly, an electrolyte for a lithium metal battery which forms a stable SEI film capable of inhibiting formation and extension of lithium dendrite so that the negative electrode of a lithium metal battery having a high possibility of battery ignition may be stabilized and an internal short-circuit may be prevented, and a lithium metal secondary battery including the same is provided.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: October 13, 2020
    Assignee: Korea Institute of Science and Technology
    Inventors: Won Il Cho, Mun Sek Kim, Ji Hyun Ryu, In Wook Nah, Min Seop Kim, Sun Min Park
  • Publication number: 20190267630
    Abstract: The aim of the present invention is to provide an electrolyte system for prolonging the life of lithium metal anode-based secondary batteries while maintaining the energy density of the batteries. The ultimate aim of the present invention is to use lithium metal in combination with cathodes, such as transition metal oxide, sulfur, and air electrodes, that are currently used in lithium ion batteries for future unmanned electric vehicles and grid energy storage systems as well as in lithium metal secondary batteries with high energy density. The use of lithium metal is also expected to contribute to the development of newly emerging unmanned aircrafts such as drones. The present invention is expected to be globally competitive in the secondary battery and electrochemical capacitor industries.
    Type: Application
    Filed: February 26, 2019
    Publication date: August 29, 2019
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: WON IL CHO, Mun Sek KIM, Ji Hyun RYU, Seung Hun LEE
  • Publication number: 20180331393
    Abstract: Disclosed is an electrolyte for a lithium metal secondary battery and a lithium metal secondary battery including the same. An electrolyte system is intended to maintain the energy density of a secondary battery based on a lithium metal negative electrode and to extend the life of a battery. Particularly, an electrolyte for a lithium metal battery which forms a stable SEI film capable of inhibiting formation and extension of lithium dendrite so that the negative electrode of a lithium metal battery having a high possibility of battery ignition may be stabilized and an internal short-circuit may be prevented, and a lithium metal secondary battery including the same is provided.
    Type: Application
    Filed: May 9, 2018
    Publication date: November 15, 2018
    Applicant: Korea Institute of Science and Technology
    Inventors: Won Il CHO, Mun Sek Kim, Ji Hyun Ryu, In Wook Nah, Min Seop Kim, Sun Min Park
  • Patent number: 9433699
    Abstract: The present invention relates to an adhesive hydrogel composition containing catechol group-coupled chitosan and Pluronic comprising a thiol group coupled to the end thereof, and more specifically, to an adhesive composition which is safe in vivo and in vitro, is temperature sensitive, and has an excellent hemostatic effect and thus can be used as a bioadhesive, and a medical adhesive, an adhesion barrier and a surface adsorption inhibitor comprising the same.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: September 6, 2016
    Assignee: INNOTHERAPY INC.
    Inventors: Haeshin Lee, Moon Sue Lee, Ji Hyun Ryu
  • Publication number: 20140193360
    Abstract: The present invention relates to an adhesive hydrogel composition containing catechol group-coupled chitosan and Pluronic comprising a thiol group coupled to the end thereof, and more specifically, to an adhesive composition which is safe in vivo and in vitro, is temperature sensitive, and has an excellent hemostatic effect and thus can be used as a bioadhesive, and a medical adhesive, an adhesion barrier and a surface adsorption inhibitor comprising the same.
    Type: Application
    Filed: November 21, 2011
    Publication date: July 10, 2014
    Applicant: Innotherapy Inc.
    Inventors: Haeshin Lee, Moon Sue Lee, Ji Hyun Ryu
  • Patent number: 7993073
    Abstract: A road marker according to exemplary embodiments of the present invention has advantages that exterior impact transmitted from a tire may be absorbed by elastic force of a spring as a consequence of a transparent cover being completely inserted in an upper housing when a vehicle passes on a road marker. The road marker has further advantages in that a vehicle load may not be transmitted to a guide cover and thus breakage of the road marker may be prevented.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: August 9, 2011
    Inventor: Ji Hyun Ryu
  • Publication number: 20090297264
    Abstract: A road marker according to exemplary embodiments of the present invention has advantages that exterior impact transmitted from a tire may be absorbed by elastic force of a spring as a consequence of a transparent cover being completely inserted in an upper housing when a vehicle passes on a road marker. The road marker has further advantages in that a vehicle load may not be transmitted to a guide cover and thus breakage of the road marker may be prevented.
    Type: Application
    Filed: May 28, 2009
    Publication date: December 3, 2009
    Inventor: Ji Hyun Ryu