Patents by Inventor Peter M. Stefan

Peter M. Stefan 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 position detector and implementation in a mirror pointing servo system
    Patent number: 9304213
    Abstract: An X-ray beam position and stability detector is provided having a first metal blade collinear with a second metal blade, where an edge of the first metal blade is opposite an edge of the second metal blade, where the first metal blade edge and the second metal blade edge are disposed along a centerline with respect to each other, where the metal blades are capable of photoelectron emission when exposed to an x-ray beam, a metal coating on the metal blades that is capable of enhancing the photoelectron emission, or suppressing energy-resonant contaminants, or enhancing the photoelectron emission and suppressing energy-resonant contaminants, a background shielding element having an electrode capable of suppressing photoelectron emission from spurious x-rays not contained in an x-ray beam of interest, and a photoelectron emission detector having an amplifier capable of detecting the photoelectron emission as a current signal.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: April 5, 2016
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Thomas A. Rabedeau, Douglas G. Van Campen, Peter M. Stefan
  • X-Ray Position Detector and Implementation in a Mirror Pointing Servo System
    Publication number: 20150276948
    Abstract: An X-ray beam position and stability detector is provided having a first metal blade collinear with a second metal blade, where an edge of the first metal blade is opposite an edge of the second metal blade, where the first metal blade edge and the second metal blade edge are disposed along a centerline with respect to each other, where the metal blades are capable of photoelectron emission when exposed to an x-ray beam, a metal coating on the metal blades that is capable of enhancing the photoelectron emission, or suppressing energy-resonant contaminants, or enhancing the photoelectron emission and suppressing energy-resonant contaminants, a background shielding element having an electrode capable of suppressing photoelectron emission from spurious x-rays not contained in an x-ray beam of interest, and a photoelectron emission detector having an amplifier capable of detecting the photoelectron emission as a current signal.
    Type: Application
    Filed: March 10, 2014
    Publication date: October 1, 2015
    Inventors: Thomas A. Rabedeau, Douglas G. Van Campen, Peter M. Stefan