Patents by Inventor Dong-Jun Cho

Dong-Jun 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).

  • Publication number: 20250046832
    Abstract: The present invention relates to a membrane-electrode assembly and a fuel cell comprising the same and, more specifically, to a membrane-electrode assembly and a fuel cell comprising the same, the membrane-electrode assembly comprising: a polymer electrolyte membrane; a sub-gasket formed to cover the circumferential portion of the polymer electrolyte membrane; and electrode layer formed on the central portion of the polymer electrolyte membrane while being spaced apart from the sub-gasket; an adhesive part formed between the sub-gasket and the electrode layer and on the polymer electrolyte membrane; and a gas diffusion layer formed on the electrode layer and the adhesive part, whereby the durability and catalyst usage rate of the membrane-electrode assembly are improved.
    Type: Application
    Filed: December 1, 2022
    Publication date: February 6, 2025
    Inventor: Dong Jun CHO
  • Patent number: 12174488
    Abstract: A liquid crystal display device includes a bottom cover; a backlight unit disposed over the bottom cover and including a light source and a reflector sheet; and a liquid crystal panel disposed over the backlight unit, wherein the reflector sheet includes first and second sheet portions adjacent to each other in a first direction and at least one first reflective tape fixing the first and second sheet portions, and wherein the at least one first reflective tape includes a plurality of cutouts extending in a second direction perpendicular to the first direction.
    Type: Grant
    Filed: April 24, 2024
    Date of Patent: December 24, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sung-Hyun Jung, Chul-Goo Son, Dong-Jun Cho
  • Publication number: 20240272478
    Abstract: A liquid crystal display device includes a bottom cover; a backlight unit disposed over the bottom cover and including a light source and a reflector sheet; and a liquid crystal panel disposed over the backlight unit, wherein the reflector sheet includes first and second sheet portions adjacent to each other in a first direction and at least one first reflective tape fixing the first and second sheet portions, and wherein the at least one first reflective tape includes a plurality of cutouts extending in a second direction perpendicular to the first direction.
    Type: Application
    Filed: April 24, 2024
    Publication date: August 15, 2024
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Sung-Hyun JUNG, Chul-Goo SON, Dong-Jun CHO
  • Patent number: 11994772
    Abstract: A liquid crystal display device includes a bottom cover; a backlight unit disposed over the bottom cover and including a light source and a reflector sheet; and a liquid crystal panel disposed over the backlight unit, wherein the reflector sheet includes first and second sheet portions adjacent to each other in a first direction and at least one first reflective tape fixing the first and second sheet portions, and wherein the at least one first reflective tape includes a plurality of cutouts extending in a second direction perpendicular to the first direction.
    Type: Grant
    Filed: September 27, 2023
    Date of Patent: May 28, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sung-Hyun Jung, Chul-Goo Son, Dong-Jun Cho
  • Publication number: 20240168331
    Abstract: A liquid crystal display device includes a bottom cover, a backlight unit disposed over the bottom cover and including a light source and a reflector sheet; and a liquid crystal panel disposed over the backlight unit, wherein the reflector sheet includes first and second sheet portions adjacent to each other in a first direction and at least one first reflective tape fixing the first and second sheet portions, and wherein the at least one first reflective tape includes a plurality of cutouts extending in a second direction perpendicular to the first direction.
    Type: Application
    Filed: September 27, 2023
    Publication date: May 23, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: Sung-Hyun JUNG, Chul-Goo SON, Dong-Jun CHO
  • Publication number: 20240030460
    Abstract: Provided is a membrane-electrode assembly having improved binding strength between a polymer electrolyte membrane and a catalyst layer and improved durability of the catalyst layer. An embodiment of the present invention provides a membrane-electrode assembly including a polymer electrolyte membrane and a catalyst layer disposed on at least one surface of the polymer electrolyte membrane, wherein the catalyst layer contains a first composite and a second composite; the first composite contains a first catalyst containing a support and first metal particles supported on the support, and a first ionomer coated on the surface of the first catalyst; the second composite contains a second catalyst that contains second metal particles and is not supported on a support, and a second ionomer that is not coated on the surface of the second catalyst; and the first ionomer and the second ionomer are identical with or different from each other.
    Type: Application
    Filed: November 30, 2021
    Publication date: January 25, 2024
    Inventors: Jung Ho KIM, Gyong Bum KO, Jun Young KIM, Sang ll LEE, Kah Young SONG, Dong Jun CHO, Nak Won KONG, Hyeong Su KIM, Kyoung Sik NAM, Ju Sung LEE, Chan Mi PARK, Sun Young JEONG
  • Publication number: 20230411633
    Abstract: The present invention relates to a catalyst layer for a fuel cell, a method for producing the catalyst layer, and a membrane-electrode assembly and a fuel cell including the catalyst layer. More particularly, the invention relates to a catalyst layer for a fuel cell, the catalyst layer including a catalyst, a heat dissipation material, and an ionomer and having an effect that the heat generated by an exothermic reaction in the catalyst layer can be efficiently discharged to the outside and a phenomenon of deterioration of a membrane-electrode assembly caused by temperature increase in the catalyst layer can be suppressed; a method for producing the catalyst layer; and a membrane-electrode assembly and a fuel cell, both including the catalyst layer.
    Type: Application
    Filed: December 3, 2021
    Publication date: December 21, 2023
    Inventors: Jung Ho KIM, Jun Young KIM, Gyong Bum KO, Sang II LEE, Kah Young SONG, Dong Jun CHO, Nak Won KONG, Hyeong Su KIM, Kyoung Sik NAM, Ju Sung LEE, Chan Mi PARK, Sun Young JEONG
  • Publication number: 20220278345
    Abstract: According to a method and an apparatus for manufacturing a membrane-electrode assembly of the present invention, positioning holes are formed through a multi-layered lamination of an electrolyte membrane, electrodes, and sub-gasket films, in an area which is not included in a final product, and manifold holes of the membrane-electrode assembly are then quickly and accurately formed on the basis of the positioning holes. Therefore, the present invention can increase the productivity while lowering the defect rate of the membrane-electrode assembly.
    Type: Application
    Filed: October 30, 2020
    Publication date: September 1, 2022
    Inventor: Dong Jun CHO
  • Patent number: 10868311
    Abstract: Disclosed are a membrane-electrode assembly for fuel cells, a method of manufacturing the same and a fuel cell system containing the same. The membrane-electrode assembly for fuel cells includes an anode and a cathode facing each other, and a polymer electrolyte membrane interposed between the anode and the cathode, wherein at least one of the anode and the cathode further includes a porous support and a catalyst layer for fuel cells disposed on one surface of the porous support. The electrode of the membrane-electrode assembly is a free-standing electrode, and the electrode has excellent adhesivity to the polymer electrolyte membrane and thus can prevent performance deterioration resulting from detachment of the electrode from the polymer electrolyte membrane during operation of fuel cells, and in particular, can secure high durability since the electrode is not readily detached even under harsh operation environments.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: December 15, 2020
    Assignee: KOLON INDUSTRIES, INC.
    Inventor: Dong Jun Cho
  • Publication number: 20180269491
    Abstract: Disclosed are a membrane-electrode assembly for fuel cells, a method of manufacturing the same and a fuel cell system containing the same. The membrane-electrode assembly for fuel cells includes an anode and a cathode facing each other, and a polymer electrolyte membrane interposed between the anode and the cathode, wherein at least one of the anode and the cathode further includes a porous support and a catalyst layer for fuel cells disposed on one surface of the porous support. The electrode of the membrane-electrode assembly is a free-standing electrode, and the electrode has excellent adhesivity to the polymer electrolyte membrane and thus can prevent performance deterioration resulting from detachment of the electrode from the polymer electrolyte membrane during operation of fuel cells, and in particular, can secure high durability since the electrode is not readily detached even under harsh operation environments.
    Type: Application
    Filed: September 23, 2016
    Publication date: September 20, 2018
    Applicant: KOLON INDUSTRIES, INC.
    Inventor: Dong Jun CHO
  • Patent number: 7065354
    Abstract: A battery charging apparatus enables a mobile phone to be used not only for its own use but also as a cordless telephone. The battery charging apparatus includes a telephone section and a Bluetooth section. The telephone section is connected between a public network and the Bluetooth section so as to interface an incoming call from the public network to the combined cordless/mobile phone through the Bluetooth section and to interface a call oriented from the combined cordless/mobile phone to the public network through the Bluetooth section. The Bluetooth section is connected between the telephone section and the combined cordless/mobile phone so as to transmit and receive wireless data.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: June 20, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joung-Kyou Park, Dong-Jun Cho
  • Patent number: 7035588
    Abstract: A method for fast transmission of large amounts of data stored in a memory of a main part to a slave by using a short-range mobile system is disclosed. The method comprises the steps of requesting transmission of data stored in the memory of the main part, establishing a selected radio link between the main part and the slave in response to the request for transmission of data, transmitting indexing information related to the kinds of data stored in the memory of the main part through the selected radio link, and transmitting data corresponding to the indexing information selected to the slave through the radio link.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: April 25, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-Wook Sim, Joung-Kyou Park, Dong-Jun Cho
  • Publication number: 20040203481
    Abstract: A battery charging apparatus enables a mobile phone to be used not only for its own use but also as a cordless telephone. The battery charging apparatus includes a telephone section and a Bluetooth section. The telephone section is connected between a public network and the Bluetooth section so as to interface an incoming call from the public network to the combined cordless/mobile phone through the Bluetooth section and to interface a call oriented from the combined cordless/mobile phone to the public network through the Bluetooth section. The Bluetooth section is connected between the telephone section and the combined cordless/mobile phone so as to transmit and receive wireless data.
    Type: Application
    Filed: October 11, 2002
    Publication date: October 14, 2004
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joung-Kyou Park, Dong-Jun Cho
  • Publication number: 20020002035
    Abstract: A method for fast transmission of large amounts of data stored in a memory of a main part to a slave by using a short-range mobile system is disclosed. The method comprises the steps of requesting transmission of data stored in the memory of the main part, establishing a selected radio link between the main part and the slave in response to the request for transmission of data, transmitting indexing information related to the kinds of data stored in the memory of the main part through the selected radio link, and transmitting data corresponding to the indexing information selected to the slave through the radio link.
    Type: Application
    Filed: June 26, 2001
    Publication date: January 3, 2002
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Seong-Wook Sim, Joung-Kyou Park, Dong-Jun Cho