Patents by Inventor JI YUN CHO

JI YUN CHO 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).

  • High Temperature Polymer Electrolyte Membrane Fuel Cell and Method for Manufacturing Same
    Publication number: 20240186555
    Abstract: An embodiment fuel cell including a high temperature polymer electrolyte membrane includes an electrolyte membrane including a phosphoric acid-doped polymer of intrinsic microporosity, a cathode disposed on a first surface of the electrolyte membrane, and an anode disposed on a second surface of the electrolyte membrane, the second surface opposite the first surface.
    Type: Application
    Filed: April 12, 2023
    Publication date: June 6, 2024
    Inventors: Da Hee Kwak, Won Jae Choi, Songi Oh, Hyoun Myung Park, Sung Hee Shin, Jee Youn Hwang, Ah Hyeon Park, Kyung Su Kim, Ji Yun Kim, Seong Min Cho, Chang Sik Song
  • Electronic device and method for manufacturing electronic device
    Patent number: 11950522
    Abstract: A method for manufacturing an electronic device including a semiconductor memory may include forming a first carbon electrode material, surface-treating the first carbon electrode material to decrease a surface roughness of the first carbon electrode material, and forming a second carbon electrode material on the treated surface of the first carbon electrode material. The second carbon electrode material may have a thickness that is greater than a thickness of the first carbon electrode material.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: April 2, 2024
    Assignee: SK hynix Inc.
    Inventors: Myoung Sub Kim, Tae Hoon Kim, Beom Seok Lee, Seung Yun Lee, Hwan Jun Zang, Byung Jick Cho, Ji Sun Han
  • Braille teaching material and method of manufacturing same
    Patent number: 11727825
    Abstract: Provided is a braille teaching material, and a method of manufacturing the same. More particularly, the present disclosure relates to a braille teaching material, and a method of manufacturing the same, wherein a teaching tool is detachably attached to a dot corresponding to a raised dot of braille among vertical dots and horizontal dots of braille, so that even braille beginners with undeveloped fingertip sensitivity are able to learn braille.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: August 15, 2023
    Inventors: In Sik Seo, Ji Yun Cho
  • Braille teaching material and method of manufacturing same
    Patent number: 11538359
    Abstract: Provided is a braille teaching material, and a method of manufacturing the same. More particularly, the present disclosure relates to a braille teaching material, and a method of manufacturing the same, wherein by magnetic force, a teaching tool is attached to a dot corresponding to a raised dot of braille among vertical dots and horizontal dots of braille, so that even braille beginners with undeveloped fingertip sensitivity are able to learn braille.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: December 27, 2022
    Inventors: In Sik Seo, Ji Yun Cho
  • BRAILLE TEACHING MATERIAL AND METHOD OF MANUFACTURING SAME
    Publication number: 20220044591
    Abstract: Provided is a braille teaching material, and a method of manufacturing the same. More particularly, the present disclosure relates to a braille teaching material, and a method of manufacturing the same, wherein a teaching tool is detachably attached to a dot corresponding to a raised dot of braille among vertical dots and horizontal dots of braille, so that even braille beginners with undeveloped fingertip sensitivity are able to learn braille.
    Type: Application
    Filed: October 2, 2020
    Publication date: February 10, 2022
    Inventors: IN SIK SEO, JI YUN CHO
  • BRAILLE TEACHING MATERIAL AND METHOD OF MANUFACTURING SAME
    Publication number: 20220044590
    Abstract: Provided is a braille teaching material, and a method of manufacturing the same. More particularly, the present disclosure relates to a braille teaching material, and a method of manufacturing the same, wherein by magnetic force, a teaching tool is attached to a dot corresponding to a raised dot of braille among vertical dots and horizontal dots of braille, so that even braille beginners with undeveloped fingertip sensitivity are able to learn braille.
    Type: Application
    Filed: October 2, 2020
    Publication date: February 10, 2022
    Inventors: IN SIK SEO, JI YUN CHO
  • Portable sound player
    Patent number: D976861
    Type: Grant
    Filed: March 16, 2021
    Date of Patent: January 31, 2023
    Assignee: SENSEE, INC.
    Inventor: Ji Yun Cho