Patents by Inventor Ralf Dorfner

Ralf Dorfner 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).

  • Gas inlet for an ion source
    Patent number: 6646253
    Abstract: In a gas inlet structure for an ion source, including a capillary for the admission of a sample gas, which capillary is disposed in a guide tube for discharging a sample gas into the guide tube, the guide tube has an open end disposed in the ion source. The guide tube includes a valve for the pulsed admission of a carrier gas to the guide tube. The guide tube, the valve and the capillary are supported in a sealed support housing from which the guide tube with the capillary disposed therein projects into the ion source for supplying thereto the sample gas in a pulsed manner.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: November 11, 2003
    Assignee: GSF-Forschungszentrum für Umwelt und Gesundheit GmbH
    Inventors: Egmont Rohwer, Ralf Zimmermann, Hans Jörg Heger, Ralf Dorfner, Ulrich Boesl, Antonius Kettrup