Patents by Inventor Peter D. Randolph

Peter D. Randolph 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).

  • Device and method for accurately measuring concentrations of airborne transuranic isotopes
    Patent number: 5552610
    Abstract: An alpha continuous air monitor (CAM) with two silicon alpha detectors and three sample collection filters is described. This alpha CAM design provides continuous sampling and also measures the cumulative transuranic (TRU), i.e., plutonium and americium, activity on the filter, and thus provides a more accurate measurement of airborne TRU concentrations than can be accomplished using a single fixed sample collection filter and a single silicon alpha detector.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: September 3, 1996
    Assignee: Lockheed Idaho Technologies Company
    Inventors: Charles V. McIsaac, E. Wayne Killian, Ervin G. Grafwallner, Ronnie L. Kynaston, Larry O. Johnson, Peter D. Randolph