Patents by Inventor Richard W. Stresau

Richard W. Stresau 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).

  • Apparatus for amplifying a stream of charged particles
    Patent number: 7446327
    Abstract: Apparatus for amplifying a stream of primary charged particles comprises a body defining a chamber and an entrance aperture for receiving the stream of primary charged particles into the chamber, and an incident dynode, adapted to be charged to a pre-determined electrical potential, having a surface positioned in the chamber to be impacted by said primary charged particles at an angle of incidence greater than 30° from the surface normal and in response to the impact to generate a stream of secondary charged particles.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: November 4, 2008
    Assignee: ETP Electron Multipliers Pty Ltd.
    Inventor: Richard W. Stresau
  • Optical scanner
    Patent number: 4019811
    Abstract: An optical scanner wherein the image of a straight line is focused by an optical element such as a concave mirror or converging lens on the arc of a circle which is scanned by a rotating drum having one or more field stops such as pin holes or optical fibers directing light upon a stationary photodetector. The optical center of the focussing element is disposed in the plane of the scanning circle; and the axis of rotation of the drum orthogonally intersects the plane at a point displaced from the optical center.
    Type: Grant
    Filed: March 26, 1975
    Date of Patent: April 26, 1977
    Assignee: Rapifax Corporation
    Inventors: Lawrence D. Lorah, Richard W. Stresau, Lawrence B. Lapson, Curtis P. VAN Vloten