Patents by Inventor Edward C. Sittler

Edward C. Sittler 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).

  • High precision electric gate for time-of-flight ion mass spectrometers
    Patent number: 8035081
    Abstract: A time-of-flight mass spectrometer having a chamber with electrodes to generate an electric field in the chamber and electric gating for allowing ions with a predetermined mass and velocity into the electric field. The design uses a row of very thin parallel aligned wires that are pulsed in sequence so the ion can pass through the gap of two parallel plates, which are biased to prevent passage of the ion. This design by itself can provide a high mass resolution capability and a very precise start pulse for an ion mass spectrometer. Furthermore, the ion will only pass through the chamber if it is within a wire diameter of the first wire when it is pulsed and has the right speed so it is near all other wires when they are pulsed.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: October 11, 2011
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Edward C. Sittler
  • HIGH PRECISION ELECTRIC GATE FOR TIME-OF-FLIGHT ION MASS SPECTROMETERS
    Publication number: 20110073754
    Abstract: A time-of-flight mass spectrometer having a chamber with electrodes to generate an electric field in the chamber and electric gating for allowing ions with a predetermined mass and velocity into the electric field. The design uses a row of very thin parallel aligned wires that are pulsed in sequence so the ion can pass through the gap of two parallel plates, which are biased to prevent passage of the ion. This design by itself can provide a high mass resolution capability and a very precise start pulse for an ion mass spectrometer. Furthermore, the ion will only pass through the chamber if it is within a wire diameter of the first wire when it is pulsed and has the right speed so it is near all other wires when they are pulsed.
    Type: Application
    Filed: September 30, 2009
    Publication date: March 31, 2011
    Applicant: United States of America as represented by the Administrator of the National Aeronautics and Spac
    Inventor: Edward C. Sittler