Patents by Inventor Stanley H. Patten

Stanley H. Patten 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).

  • Mixed phosphors comprising both Gd.sub.2 O.sub.2 S and GdTaO.sub.4 and X-ray screens thereof
    Patent number: 4431922
    Abstract: An X-ray phosphor comprising a mixture of gadolinium oxysulfide and gadolinium tantalate, activated with trivalent terbium, is employed in X-ray conversion screens to convert X-rays to visible light, mostly in the green region of the spectrum.
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: February 14, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Stanley H. Patten
  • X-Ray screens based on phosphor mixtures of CaWO.sub.4 and rare earth tantalates
    Patent number: 4387141
    Abstract: X-ray intensifying screens with improved speed and image sharpness can be made from a phosphor mixture of calcium tungstate and yttrium tantalate. The tantalate phosphor may be further activated with rare earths.
    Type: Grant
    Filed: May 12, 1982
    Date of Patent: June 7, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Stanley H. Patten