Patents by Inventor Hye Min RYU

Hye Min 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: 20220207100
    Abstract: Disclosed are a method and an apparatus for managing a user profile. A user profile management method performed by a server according to an example embodiment includes creating a plurality of profiles corresponding to a user account, receiving a view request for a profile of the other user account in a predetermined relationship with the user account from a user terminal logged in with the user account, providing a UI of a profile of the other user account including an interfacing object regarding the profile of the user account to the user account, receiving an input for selecting a profile to be displayed on the other user terminal logged in the other user account, among a plurality of profiles corresponding to the user account through the interfacing object, and matching the other user account with the selected profile.
    Type: Application
    Filed: December 28, 2021
    Publication date: June 30, 2022
    Inventors: So Yon SUNG, Ji Sun LEE, Bum Sun RYU, Jee Won YOU, Ki Byung CHAE, Uh Chul KIM, Do Hyun YOUN, Young Min PARK, Eun Ho SON, Min Jung KIM, Jin Hwan LEE, Jun Young KIM, Hyun Ok CHOI, Hye Sun KIM, Tae Joong YOON, Ha Na JUNG, Dong Keun LEE, Do Yi KIM, Min Jeong YANG, Hong Chan YUN
  • Patent number: 11251463
    Abstract: A method of preparing a sintered solid electrolyte includes (a) coprecipitating a mixed solution including a lanthanum precursor, a zirconium precursor, a gallium precursor, a complexing agent, and a pH adjuster to provide a solid electrolyte precursor; (b) washing and drying the solid electrolyte precursor to provide a washed and dried solid electrolyte precursor; (c) mixing the washed and dried solid electrolyte precursor with a lithium source to provide a mixture; (d) calcining the mixture to provide a calcined solid electrolyte, which is a gallium (Ga)-doped lithium lanthanum zirconium oxide (LLZO), as represented by Chemical Formula 1 below, LixLayZrzGawO12,??Chemical Formula 1 where 5?x?9, 2?y?4, 1?z?3, and 0<w?4; and (e) sintering the calcined solid electrolyte at a temperature ranging from 1,000° C. to 1,300° C. to provide the sintered solid electrolyte, wherein a ratio (M1:M2) of moles (M1) of lithium element to moles (M2) of gallium element ranges from 6.7:0.1 to 5.8:0.4.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: February 15, 2022
    Assignee: Korea Institute of Industrial Technology
    Inventors: Ho Sung Kim, Min Young Kim, Seung Hoon Yang, Da Hye Kim, Hye Min Ryu, Ha Young Jung
  • Publication number: 20190273283
    Abstract: Disclosed is a method of preparing a solid electrolyte, the method including (a) preparing a solid electrolyte precursor by subjecting a mixed solution composed of a lanthanum precursor, a zirconium precursor, a gallium precursor, a complexing agent, and a pH adjuster to coprecipitation, (b) washing and drying the solid electrolyte precursor, (c) preparing a mixture by mixing the washed and dried solid electrolyte precursor with a lithium source, and (d) calcining the mixture to give a calcined solid electrolyte, which is a gallium (Ga)-doped lithium lanthanum zirconium oxide (LLZO), as represented by Chemical Formula 1. A solid electrolyte having increased ionic conductivity and an improved potential window can be provided using the method of preparing the solid electrolyte.
    Type: Application
    Filed: October 27, 2017
    Publication date: September 5, 2019
    Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Ho Sung KIM, Min Young KIM, Seung Hoon YANG, Da Hye KIM, Hye Min RYU, Ha Young JUNG
  • Publication number: 20180309163
    Abstract: Disclosed is a bipolar all solid-state battery, which can efficiently control a manufacturing process thereof and can improve electric properties thereof. In an exemplary embodiment, the bipolar all solid-state battery includes a unit cell including a first current collector having a first surface and a second surface opposite to the first surface; a first active material coated on the first surface of the first current collector, a second current collector having a first surface and a second surface opposite to the first surface; a second active material coated on the first surface of the second current collector and facing the first active material; and an all solid-state electrolyte formed between the first active material and the second active material. When a plurality of the unit cells are stacked, the first current collector and the second current collector are connected to each other through surface contact.
    Type: Application
    Filed: February 5, 2018
    Publication date: October 25, 2018
    Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Ho Sung KIM, Min Young KIM, Seung Hoon YANG, Da Hye KIM, Ha Young JUNG, Hye Min RYU, Jin Sub LIM