Patents by Inventor John J. Friel

John J. Friel 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).

  • Analyzer detector window and a method for manufacturing the same
    Patent number: 5090046
    Abstract: The invention relates to a detector window for an analyzer, particularly an X-ray analyzer, and to a method for manufacturing the same. The detector window is permeable to soft X-rays when the window is at least on one surface in contact with a pressure essentially equal to that of a vacuum. The detector window of the invention is a thin film, with the thickness of 0.5 .mu.m, and is manufactured by means of photolitography.
    Type: Grant
    Filed: November 21, 1989
    Date of Patent: February 18, 1992
    Assignee: Outokumpu Oy
    Inventor: John J. Friel