The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 2004
Filed:
Sep. 14, 2002
Applicant:
Inventors:
Ralf Zimmermann, München, DE;
Jorg Heger, München, DE;
Antonius Kettrup, Arnsberg, DE;
Fabian Mühlberger, Kranzberg, DE;
Klaus Hafner, Seeon, DE;
Ulrich Boesl, Landshut, DE;
Assignee:
GSF-Forschungszentrum für Umwelt und Gesundheit GmbH, Oberschleissheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 4/904 ; H01J 4/702 ;
U.S. Cl.
CPC ...
H01J 4/904 ; H01J 4/702 ;
Abstract
In a method and apparatus for detecting compounds in a gas stream, the gas stream with the compounds to be detected is conducted into an ionization chamber of a mass spectrometer where the gas stream is subjected in the ion chamber in a pulsed manner alternately to UV laser pulses and to vacuum ultraviolet VUV laser pulses and the ions generated thereby are directed into the mass spectrometer for detection therein to determine the compounds in the gas stream.