Patents by Inventor Hoan N. Ngoc

Hoan N. Ngoc 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).

  • Neutral radiation detection and localization
    Patent number: 4286158
    Abstract: PCT No. PCT/FR 78/00046 Sec. 371 Date Aug. 2, 1979 Sec. 102(e) Date Aug. 2, 1979 PCT Filed Dec. 7, 1978 PCT Pub. No. W079/00353 PCT Pub. Date June 28, 1979A device for detecting and localizing soft gamma and X radiations, comprising an enclosure 10 provided with a window 11 opaque to light and transparent to incident radiations, occupied by a noble gas and provided with electrodes for causing the electrons to drift towards a secondary photon creation space.In said space there reigns an electric field having sufficient value to cause the formation of secondary photons by excitation then de-excitation of the atoms of the noble gas. The secondary photons pass through a transparent window 12 and are converted into photons in the close UV or visible spectrum. The scintillations are localized by PM tubes 23 and 24.
    Type: Grant
    Filed: August 2, 1979
    Date of Patent: August 25, 1981
    Assignee: Agence Nationale de Valorisation de la Recherche (ANVAR)
    Inventors: Georges Charpak, Hoan N. Ngoc, Armando Policarpo