Patents Assigned to Guardnec Co., LTD.
  • Gas diffusion layer comprising porous carbonaceous film layer for fuel cell
    Patent number: 11289721
    Abstract: The present invention relates to a gas diffusion layer including a porous carbonaceous film layer for a fuel cell, in which the average pore diameter of the porous carbonaceous film layer is 0.1 ?m to 100 ?m, a membrane-electrode assembly including the gas diffusion layer, and a fuel cell including the membrane-electrode assembly.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: March 29, 2022
    Assignee: GUARDNEC CO., LTD.
    Inventors: Ki Ho Park, Bu Gon Kim
  • GAS DIFFUSION LAYER FOR FUEL CELL, COMPRISING SPUN CARBON NANOFIBER LAYER
    Publication number: 20200127306
    Abstract: The present invention relates to a gas diffusion layer including a carbon nanofiber spun layer for a fuel cell, a membrane-electrode assembly including the gas diffusion layer for a fuel cell, and a fuel cell including the membrane-electrode assembly.
    Type: Application
    Filed: June 26, 2018
    Publication date: April 23, 2020
    Applicant: GUARDNEC CO., LTD.
    Inventors: Ki Ho PARK, Bu Gon KIM, Jong Su PARK
  • GAS DIFFUSION LAYER FOR FUEL CELL, COMPRISING SPUN CARBON NANOFIBER LAYER
    Publication number: 20200119381
    Abstract: The present invention relates to an electrolyte membrane including a nanofiber spun layer for a fuel cell, a membrane-electrode assembly including the electrolyte membrane, and a fuel cell including the membrane-electrode assembly.
    Type: Application
    Filed: June 26, 2018
    Publication date: April 16, 2020
    Applicant: GUARDNEC CO., LTD.
    Inventors: Ki Ho PARK, Bu Gon KIM, Jong Su Park
  • GAS DIFFUSION LAYER COMPRISING POROUS CARBONACEOUS FILM LAYER FOR FUEL CELL
    Publication number: 20190237778
    Abstract: The present invention relates to a gas diffusion layer including a porous carbonaceous film layer for a fuel cell, in which the average pore diameter of the porous carbonaceous film layer is 0.1 ?m to 100 ?m, a membrane-electrode assembly including the gas diffusion layer, and a fuel cell including the membrane-electrode assembly.
    Type: Application
    Filed: November 28, 2016
    Publication date: August 1, 2019
    Applicant: GUARDNEC CO., LTD.
    Inventors: Ki Ho PARK, Bu Gon KIM
  • Thermo-reversible adhesive composition and thermo-reversible adhesive sheet comprising the same
    Patent number: 10344192
    Abstract: A thermo-reversible adhesive composition containing a base resin, methyl acetoacetate, and a metal-organic complex compound having the formula M(X)n(R)o, wherein: M is a metal selected from the group consisting of aluminum, iron, and nickel, X is acetylacetonate, R is H2O, n is an integer equal to 2 or 3, and o is an integer greater than or equal to 0 and less than or equal to 2, such that n+o is equal to 3 or 4.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: July 9, 2019
    Assignees: Samsung Electronics Co., Ltd., GUARDNEC Co., Ltd.
    Inventors: Yongbeom Kim, Kiho Park, Bowon Jung, Bugon Kim, Jaeik Song, Wonseok Choi
  • Method for preparing graphite film
    Patent number: 9527739
    Abstract: There is provided a method for preparing a graphite film by using a single continuous heater, the method including: converting a polymer film to a carbonized film by introducing the polymer film into a first heater having a first temperature section; and converting the carbonized film to the graphite film by introducing the carbonized film into a second heater having a second temperature section where a temperature linearly increases.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: December 27, 2016
    Assignee: Guardnec Co., Ltd.
    Inventors: Ki-Ho Park, Won-Seok Choi, Woo-Jeong Kim
  • Waterproof tape for preventing leakage of light
    Patent number: 9303193
    Abstract: There is provided a waterproof tape for preventing leakage of light including: a waterproof film that contains extruded or cast thermoplastic polyurethane (TPU); and a light-blocking film that is laminated on the waterproof film and contains a colored substance.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: April 5, 2016
    Assignee: GUARDNEC CO., LTD.
    Inventors: Ki-Ho Park, Won-Seok Choi
  • Method for preparing graphite film
    Patent number: 9221683
    Abstract: There is provided a method for preparing a graphite film by using a single continuous heater, the method including: converting a polymer film to a carbonized film by introducing the polymer film into a first heater having a first temperature section; and converting the carbonized film to the graphite film by introducing the carbonized film into a second heater having a second temperature section where a temperature linearly increases.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: December 29, 2015
    Assignee: Guardnec Co., LTD.
    Inventors: Ki-Ho Park, Won-Seok Choi, Woo-Jeong Kim