Patents by Inventor Jeng-Hung Lee

Jeng-Hung Lee 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: 8970099
    Abstract: The present disclosure relates to an ionization chamber with a built-in temperature sensor, which is especially adapted for devices, such as X-ray units, gamma irradiators and linear accelerators, whichever is used for performing radiation dose output measurement accordingly. In an embodiment, the ionization chamber comprises: a cavity, an inner electrode, a chamber wall, an outer electrode, a guard electrode and a calibrated temperature sensor for detecting real-time temperature inside the cavity of ionization chamber to be used in the correction process of radiation dose measurement signals. With the aforesaid device, not only the accuracy of measurement can be improved effectively, but also the time consumed in a radiation dose measurement period can be reduced greatly since it will no longer bear the disadvantage that the radiation dose measurement has to wait until the temperatures inside and outside the cavity of ionization chamber had reached a thermal equilibrium before the measurement.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: March 3, 2015
    Assignee: Institute of Nuclear Energy Research Atomic Energy Council, Executive Yuan
    Inventors: Jeng-Hung Lee, Shi-Hwa Su, Tzeng-Te Huang, Bor-Jing Chang
  • Publication number: 20140117835
    Abstract: The present disclosure relates to an ionization chamber with a built-in temperature sensor, which is especially adapted for devices, such as X-ray units, gamma irradiators and linear accelerators, whichever is used for performing radiation dose output measurement accordingly. In an embodiment, the ionization chamber comprises: a cavity, an inner electrode, a chamber wall, an outer electrode, a guard electrode and a calibrated temperature sensor for detecting real-time temperature inside the cavity of ionization chamber to be used in the correction process of radiation dose measurement signals. With the aforesaid device, not only the accuracy of measurement can be improved effectively, but also the time consumed in a radiation dose measurement period can be reduced greatly since it will no longer bear the disadvantage that the radiation dose measurement has to wait until the temperatures inside and outside the cavity of ionization chamber had reached a thermal equilibrium before the measurement.
    Type: Application
    Filed: October 9, 2013
    Publication date: May 1, 2014
    Applicant: INSTITUTE OF NUCLEAR ENERGY RESEARCH ATOMIC ENERGY COUNCIL, EXECUTIVE YUAN
    Inventors: JENG-HUNG LEE, SHI-HWA SU, TZENG-TE HUANG, BOR-JING CHANG
  • Patent number: 8502134
    Abstract: The present invention relates to a radiation measurement instrument calibration facility with the abilities of lowering scattered radiation and shielding background radiation and it is capable of providing a suitable environment for performing performance test, calibration and experiment upon a radiation measurement instrument. In an embodiment, the calibration facility comprises: a shielding device, a collimator, a multi-source irradiator, a radiation baffle, a carrier, an electric door unit and a control unit. With the design of the calibration facility of the present invention, the interference coming from the background radiation and scattered radiation in the laboratory during the radiation measurement instrument calibration can be effectively reduced to enhance the accuracy of measurement or calibration for the instrument, and also the instrument calibration and testing can be performed in radiation fields of low-, medium- and high-dose rate levels to meet the requirements of ISO 4037-1 (1996) Standard.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: August 6, 2013
    Assignee: Institute of Nuclear Energy Research Atomic Energy Council, Executive Yuan
    Inventors: Jeng-Hung Lee, Shi-Hwa Su, Bor-Jing Chang
  • Publication number: 20130099138
    Abstract: The present invention relates to a radiation measurement instrument calibration facility with the abilities of lowering scattered radiation and shielding background radiation and it is capable of providing a suitable environment for performing performance test, calibration and experiment upon a radiation measurement instrument. In an embodiment, the calibration facility comprises: a shielding device, a collimator, a multi-source irradiator, a radiation baffle, a carrier, an electric door unit and a control unit. With the design of the calibration facility of the present invention, the interference coming from the background radiation and scattered radiation in the laboratory during the radiation measurement instrument calibration can be effectively reduced to enhance the accuracy of measurement or calibration for the instrument, and also the instrument calibration and testing can be performed in radiation fields of low-, medium- and high-dose rate levels to meet the requirements of ISO 4037-1 (1996) Standard.
    Type: Application
    Filed: October 21, 2011
    Publication date: April 25, 2013
    Applicant: Institute of Nuclear Energy Research Atomic Energy Council, Executive Yuan
    Inventors: JENG-HUNG LEE, Shi-Hwa Su, Bor-Jing Chang
  • Publication number: 20060025304
    Abstract: Disclosed is a radiation sensitive photocatalyst composition and application thereof. The composition can be induced by using ionization radiation or non-ionization radiation, which comprises a photocatalyst to perform photocatalysis; an enhancer to convert radiation energy into photons for photocatalysis; and a porous material to absorb and to immobilize the photocatalyst/enhancer becoming a composition system. The advantages of using radiation to carry out the photocatalytic reaction for environmental protection are high permeability as well as time flexibility in comparison of artificially UV/natural solar radiation. Anyway, the present invention can be used to fulfill the environmental application such as volume-reduction of spent radioactive resin and organics degradation. It is worthy to explore the regeneration of hydrogen energy by this invention.
    Type: Application
    Filed: June 3, 2005
    Publication date: February 2, 2006
    Inventors: Chu-Fang Wang, Ching-Tsung Yu, Jeng-Hung Lee