Patents by Inventor Rene Peter Marie Schroemges

Rene Peter Marie Schroemges 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).

  • Particle-optical device and detection means
    Patent number: 6972412
    Abstract: A particle-optical apparatus comprising a sample holder for receiving a sample, a particle source embodied to produce a primary beam of first electrically charged particles along an optical axis for the purpose of irradiating the sample, first detector embodied to detect second electrically charged particles that emanate from the sample as a result of the irradiation thereof, a detection space that at the least is formed by the sample holder and the first detector, and an immersion lens embodied to produce a magnetic field for the purpose of focusing the primary beam in the vicinity of the sample holder. The first detector are embodied to produce an electric field in the detection space, and the detection space is embodied to comprise a gas.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: December 6, 2005
    Assignee: FEI Company
    Inventors: Jacob Johannes Scholtz, William Ralph Knowles, Bradley Lamar Thiel, Gerardus Van Veen, Rene Peter Marie Schroemges
  • Particle-optical device and detection means
    Publication number: 20040124356
    Abstract: A particle-optical apparatus comprising a sample holder for receiving a sample, a particle source embodied to produce a primary beam of first electrically charged particles along an optical axis for the purpose of irradiating the sample, first detector embodied to detect second electrically charged particles that emanate from the sample as a result of the irradiation thereof, a Detection space that at the least is formed by the sample holder and the first detector, and an immersion lens embodied to produce a magnetic field for the purpose of focusing the primary beam in the vicinity of the sample holder. The first detector are embodied to produce an electric field in the detection space, and the detection space is embodied to comprise a gas.
    Type: Application
    Filed: September 18, 2003
    Publication date: July 1, 2004
    Inventors: Jacob Johannes Scholtz, William Ralph Knowles, Bradley Lamar Thiel, Gerardus Van Veen, Rene Peter Marie Schroemges