Patents by Inventor Jae Hyun Ma

Jae Hyun Ma 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: 20250092998
    Abstract: A system for supplying liquefied hydrogen includes: liquefied hydrogen storage tanks each comprising a temperature control unit controlling an internal temperature of the liquefied hydrogen storage tank to maintain an inside of the liquefied hydrogen storage tank at a low pressure; pressure tanks receiving and storing liquefied hydrogen to be supplied to a liquefied hydrogen demand site from the liquefied hydrogen storage tanks, the pressure tanks having a smaller capacity than the liquefied hydrogen storage tanks and maintained at a higher pressure than the liquefied hydrogen storage tanks; a liquefied hydrogen supply line through which liquefied hydrogen is transferred from the pressure tanks to the liquefied hydrogen demand site; and a compressor compressing boil-off hydrogen gas generated in the liquefied hydrogen storage tanks and supplying the compressed boil-off hydrogen gas to the pressure tanks to generate a pressure required for delivery.
    Type: Application
    Filed: August 11, 2022
    Publication date: March 20, 2025
    Inventors: Jong Yeol Yi, Yong Seong Jeon, Jae Hyun Ma, Ji Hoon Joung, Hae Chul Han, Eun Young Yun, Jin Yeong PARK
  • Publication number: 20240247759
    Abstract: Disclosed herein are a system and method which can control the generation rate of boil-off gas from liquefied hydrogen and can maintain the liquefied hydrogen storage tank at a low pressure. The method for controlling boil-off gas from liquefied hydrogen according to the present invention includes: at least two storage tanks storing liquefied hydrogen and each operated in a high-temperature mode or in a low-temperature mode, wherein the low-temperature mode includes: maintaining at least a portion of liquefied hydrogen stored in the storage tank at a first temperature being a densification temperature, and the high-temperature mode includes: maintaining at least a portion of liquefied hydrogen stored in the storage tank at a second temperature being a temperature exceeding a triple point of liquefied hydrogen through recovery of cold heat from liquefied hydrogen stored in the storage tank.
    Type: Application
    Filed: July 7, 2022
    Publication date: July 25, 2024
    Inventors: Jong Yeol Yi, Yong Seong Jeon, Jae Hyun Ma, Ji Hoon Joung, Hae Chul Han, Eun Young Yun, Jin Yeong PARK
  • Publication number: 20240240754
    Abstract: Disclosed are a liquefied hydrogen storage tank which is applicable to a storage facility storing a large amount of hydrogen in a liquefied state or a vehicle transporting liquefied hydrogen and a liquefied hydrogen storage tank, and a method for controlling the temperature of the liquefied hydrogen storage tank which can control the generation rate of boil-off gas from liquefied hydrogen and can maintain the liquefied hydrogen storage tank at a low pressure. The liquefied hydrogen storage tank is a storage container storing liquefied hydrogen, has an inner space including a lower space in which liquefied hydrogen is stored and an upper space in which a gas is stored, and includes a heat inflow prevention unit disposed in the upper space or at an interface between the upper space and the lower space and preventing inflow of thermal energy into the lower space through the upper space.
    Type: Application
    Filed: August 11, 2022
    Publication date: July 18, 2024
    Inventors: Jong Yeol Yi, Yong Seong Jeon, Jae Hyun Ma, Ji Hoon Joung, Hae Chul Han, Eun Young Yun, Jin Yeong PARK