Patents by Inventor Hyungki Cha

Hyungki Cha 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: 9099211
    Abstract: Disclosed herein is a prompt gamma-ray detection apparatus for analyzing chemical materials using femtosecond pulse laser-induced neutrons, which can be effectively used in the nondestructive inspection of various materials, such as metals, coal, cement, radioactive materials and the like as well as explosives and chemical materials, and which can provide better measurement results for the analysis of basic materials, and a method of measuring prompt gamma-rays using the apparatus. The prompt gamma-ray detection apparatus is advantageous because it can non-destructively analyze the elements in a chemical sample using a femtosecond pulse laser-induced neutron generator that solves the problems of an atomic reactor for research or a radioactive isotope as a neutron radiation source.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: August 4, 2015
    Assignee: Korea Atomic Energy Research Institute
    Inventors: Kwon-Hae Yea, HyungKi Cha, Sung-Man Lee, Sang-Soon Park, Seong Hee Park
  • Publication number: 20120183111
    Abstract: Disclosed herein is a prompt gamma-ray detection apparatus for analyzing chemical materials using femtosecond pulse laser-induced neutrons, which can be effectively used in the nondestructive inspection of various materials, such as metals, coal, cement, radioactive materials and the like as well as explosives and chemical materials, and which can provide better measurement results for the analysis of basic materials, and a method of measuring prompt gamma-rays using the apparatus. The prompt gamma-ray detection apparatus is advantageous because it can non-destructively analyze the elements in a chemical sample using a femtosecond pulse laser-induced neutron generator that solves the problems of an atomic reactor for research or a radioactive isotope as a neutron radiation source.
    Type: Application
    Filed: December 14, 2011
    Publication date: July 19, 2012
    Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Kwon-Hae Yea, HyungKi Cha, Sung-Man Lee, Sang-Soon Park, Seong Hee Park
  • Publication number: 20110144829
    Abstract: Provided is a bird countermeasure system. The bird countermeasure system includes a bird countermeasure robot configured to be operated through a remote command while patrolling or moving in an area adjacent to a runway or taxiway along which airplanes take off, land or taxi so as to approach the runway or taxiway or to detect or repel birds located close to the runway or taxiway.
    Type: Application
    Filed: September 16, 2010
    Publication date: June 16, 2011
    Applicant: Korea Atomic Energy Research Institute
    Inventors: Chang Hwoi Kim, Seop Hur, Kwang Seop Son, Hyungki Cha, Jung-Woon Lee, Young-Soo Choi, Kyung-min Jeong, Sung-Uk Lee, Tong-Il Jang, Sung-Mo Nam, Se-Woo Cheon
  • Publication number: 20070057177
    Abstract: A mass spectrometer system and a mass spectrometry method, in which a mass resolution is increased through a non-linear ion post-focusing apparatus so as to more accurately analyze constituents of components contained in a dust particle. The mass spectrometer system according to the present invention comprises: an ion-introducing unit for introducing particles into the mass spectrometer system; an ionization unit for ionizing the introduced particles to generate ions; an ion-accelerating unit for accelerating the generated ions with different electric fields depending on respective positions of the ions; and an ion mass detector for detecting the mass of the accelerated ions. According to the present invention, the inventive mass spectrometer system uses a non-linear ion post-focusing apparatus to cause even ions whose initial energies and initial directions are different from one another to be incident on the TOF ion sensor concurrently, thereby increasing the resolution of the mass-to-charge of ions.
    Type: Application
    Filed: September 7, 2006
    Publication date: March 15, 2007
    Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Dukhyein Kim, Hyungki Cha, Kiho Yang