Patents by Inventor Hyun Jin Ji

Hyun Jin Ji 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).

  • Patent number: 9212057
    Abstract: A method for controlling a fuel reformer, capable of generating hydrogen by reforming fuel, comprises: heating a catalyst of the fuel reformer by operating an electric heater formed to enclose the catalyst; supplying fuel and air to the catalyst under a condition of complete combustion; flame-combusting the fuel by igniting an ignition plug installed near a rear end of the catalyst; and shifting the position of the flame combustion to inside of the catalyst, by reducing a supply amount of the fuel and the air, such that temperature of the catalyst is drastically increased.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: December 15, 2015
    Assignee: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Hyun Jin Ji, Sang Hyeon Ha, Sung Baek Cho
  • Patent number: 9136543
    Abstract: A battery system (100) having a heating element (124), a thermal switch (130), a battery module (140), and a pin structure (170) is disclosed. The battery system (100) comprises: a battery case (110) forming an internal space; a battery module (140) located in the battery case and including a battery; a heating element structure (120) located in the battery case (110) and increasing the temperature of the battery System by heat generated by an impact; and a pin structure (170) for concentrating and transferring an external impact to a pre determined region of the heating element structure.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: September 15, 2015
    Assignees: GS Energy Corporation, Agency for Defense Development
    Inventors: Sang-Cheol Nam, Ho-Young Park, Young-Chang Lim, Ki-Chang Lee, Kyu-Gil Choi, Ho-Sung Hwang, Gi-Back Park, Sung-Back Cho, Seung-Ho Kang, Hyun-Jin Ji
  • Publication number: 20140079626
    Abstract: A method for controlling a fuel reformer, capable of generating hydrogen by reforming fuel, comprises: heating a catalyst of the fuel reformer by operating an electric heater formed to enclose the catalyst; supplying fuel and air to the catalyst under a condition of complete combustion; flame-combusting the fuel by igniting an ignition plug installed near a rear end of the catalyst; and shifting the position of the flame combustion to inside of the catalyst, by reducing a supply amount of the fuel and the air, such that temperature of the catalyst is drastically increased.
    Type: Application
    Filed: June 24, 2013
    Publication date: March 20, 2014
    Inventors: Hyun Jin JI, Sang Hyeon HA, Sung Baek CHO
  • Publication number: 20110020689
    Abstract: A battery system (100) having a heating element (124), a thermal switch (130), a battery module (140), and a pin structure (170) is disclosed. The battery system (100) comprises: a battery case (110) forming an internal space; a battery module (140) located in the battery case and including a battery; a heating element structure (120) located in the battery case (110) and increasing the temperature of the battery System by heat generated by an impact; and a pin structure (170) for concentrating and transferring an external impact to a pre-determined region of the heating element structure.
    Type: Application
    Filed: April 24, 2008
    Publication date: January 27, 2011
    Applicants: Gsnanotech Co., Ltd., Agency For Defense Development
    Inventors: Sang-Cheol Nam, Ho-Young Park, Young-Chang Lim, Ki-Chang Lee, Kyu-Gil Choi, Ho-Sung Hwang, Gi-Back Park, Sung-Back Cho, Seung-Ho Kang, Hyun-Jin Ji
  • Patent number: 7719760
    Abstract: Provided is an optical microscope system for detecting nanowires to allow for use of an existing optical microscope in fabricating an electronic device having the nanowires and including: a light source for emitting light to provide the light to a nanowire sample; a rotational polarizer provided on a path of the light emitted from the light source for polarizing the light; an optical microscope for detecting a nanowire image using light that is polarized by the rotational polarizer and incident on the nanowire sample; a CCD camera provided in a region of the optical microscope for photographing and storing the nanowire image detected by the optical microscope; and a data processor for performing Fast Fourier Transform (FFT) on the nanowire image stored in the CCD camera. Intensity of reflected light varies, due to optical anisotropy of the nanowires, along a polarizing orientation of light incident on the nanowires.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: May 18, 2010
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Eun Kyoung Kim, Seung Eon Moon, Hong Yeol Lee, Jong Hyurk Park, Kang Ho Park, Jong Dae Kim, Gyu Tae Kim, Do Young Jang, Eung Seook Park, Hyun Jin Ji
  • Publication number: 20090195869
    Abstract: Provided is an optical microscope system for detecting nanowires that is designed with a rotational polarizer and Fast Fourier Transform (FFT) to allow for use of an existing optical microscope in fabricating an electronic device having the nanowires. The optical microscope system includes: a light source for emitting light to provide the light to a nanowire sample; a rotational polarizer provided on a path of the light emitted from the light source for polarizing the light; an optical microscope for detecting a nanowire image using light that is polarized by the rotational polarizer and incident on the nanowire sample; a CCD camera provided in a region of the optical microscope for photographing and storing the nanowire image detected by the optical microscope; and a data processor for performing Fast Fourier Transform (FFT) on the nanowire image stored in the CCD camera.
    Type: Application
    Filed: November 15, 2007
    Publication date: August 6, 2009
    Applicants: Electronics and Telecommunications Research Institute, Korea University Industrial & Academic Collaboration Foundation
    Inventors: Eun Kyoung Kim, Seung Eon Moon, Hong Yeol Lee, Jong Hyurk Park, Kang Ho Park, Jong Dae Kim, Gyu Tae Kim, Do Young Jang, Eung Seok Park, Hyun Jin Ji
  • Patent number: 7570251
    Abstract: A character inputting system for a mobile terminal, and a mobile terminal using the same, is provided, to thereby more efficiently input characters in a mobile terminal in which characters should be input with a small number of keys. The character inputting system includes a key module (10) having five keys, a key signal generator (20) for converting a contact button signal provided from the key module into a key signal and outputting the converted result, and a data generator (30) generating data corresponding to the key signal output from the key signal generator (20).
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: August 4, 2009
    Inventor: Hyun Jin Ji