Patents by Inventor Frans G. Vreugdenhil

Frans G. Vreugdenhil 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).

  • Gas-filled X-ray detector
    Patent number: 4870281
    Abstract: The anode connections in a gas-filled X-ray detector are mounted so as to extend transversely of the anode wire so that a substantial saving as regards space is achieved. In order to reduce field inhomogeneities in the ionization space, there may be provided a field profile bush which partly encloses the anode wire and field bushes may be arranged around the anode connection pins.
    Type: Grant
    Filed: February 4, 1988
    Date of Patent: September 26, 1989
    Assignee: U.S. Philips Corporation
    Inventors: Johannes Van Der Borst, Lourens Valkonet, Frans G. Vreugdenhil