Patents by Inventor Hyok Jin CHO

Hyok Jin 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).

  • Method of designing a low-pressure chamber
    Patent number: 11285470
    Abstract: Provided is a method of designing a low-pressure chamber that provides a preset air pressure corresponding to a predetermined altitude. The method may include the steps of: calculating a predetermined error range of the preset air pressure, and calculating an amount and types of materials of a getter to be inserted into the low-pressure chamber based on the error range and a total volume of the low-pressure chamber.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: March 29, 2022
    Assignee: Korea Aerospace Research Institute
    Inventors: Hyok Jin Cho, Hee Jun Seo, Sung Wook Park, Guee Won Moon
  • LOW-PRESSURE CHAMBER PROVIDING PRESET AIR PRESSURE
    Publication number: 20200206728
    Abstract: Provided is a method of designing a low-pressure chamber that provides a preset air pressure corresponding to a predetermined altitude. The method may include the steps of: calculating a predetermined error range of the preset air pressure, and calculating an amount and types of materials of a getter to be inserted into the low-pressure chamber based on the error range and a total volume of the low-pressure chamber.
    Type: Application
    Filed: March 10, 2020
    Publication date: July 2, 2020
    Applicant: Korea Aerospace Research Institute
    Inventors: Hyok Jin CHO, Hee Jun SEO, Sung Wook PARK, Guee Won MOON
  • Low-pressure chamber providing preset air pressure
    Patent number: 10632459
    Abstract: Provided is a method for maintaining a preset air pressure of a low-pressure chamber. The method may comprise the steps of: measuring the inside air pressure of a low-pressure chamber; if the difference between the inside air pressure and a preset air pressure is the same or higher than a threshold value, adjusting the inside temperature of the low-pressure chamber by using a thermal conduction part disposed inside the low-pressure chamber; and by using a getter, making the difference to be below the threshold value by adsorbing or releasing molecules inside the low-pressure chamber according to the adjustment of the temperature.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: April 28, 2020
    Assignee: Korea Aerospace Research Institute
    Inventors: Hyok Jin Cho, Hee Jun Seo, Sung Wook Park, Guee Won Moon
  • DEVICE AND METHOD FOR CONTROLLING TEMPERATURE OF LOW-TEMPERATURE PUMP
    Publication number: 20180216610
    Abstract: Provided is a cryopump enabling the maintaining of a preset temperature during a preset time, even when turned off. The cryopump may comprise: a displacer which adjusts outside temperature by compressing or expanding a refrigerant existing therein; a thermal conduction part which transfers heat outside the cryopump to the refrigerant; and a thermal conduction buffer part which, if the displacer is turned off, absorbs the heat outside that is transferred to the refrigerant, and uses same as energy for changing a phase.
    Type: Application
    Filed: April 14, 2016
    Publication date: August 2, 2018
    Applicant: Korea Aerospace Research Institute
    Inventors: Hyok Jin CHO, Hee Jun SEO, Sung Wook PARK, Guee Won MOON
  • LOW-PRESSURE CHAMBER PROVIDING PRESET AIR PRESSURE
    Publication number: 20180207632
    Abstract: Provided is a method for maintaining a preset air pressure of a low-pressure chamber.
    Type: Application
    Filed: April 14, 2016
    Publication date: July 26, 2018
    Applicant: Korea Aerospace Research Institute
    Inventors: Hyok Jin CHO, Hee Jun SEO, Sung Wook PARK, Guee Won MOON