Patents by Inventor David J. Crowther

David J. Crowther 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).

  • X-ray optical element and method for its manufacture
    Patent number: 5384817
    Abstract: X-ray dispersive elements comprise a stacked array of layer pairs of boron nitride and either nickel, tungsten, chromium, vanadium, iron, manganese, cobalt and combinations thereof. The boron nitride is preferably deposited through a planar magnetron sputtering process.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: January 24, 1995
    Assignee: Ovonic Synthetic Materials Company
    Inventors: David J. Crowther, George Gutman