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:
Mar. 22, 2005
Filed:
Apr. 09, 2003
Karl-heinz Schartner, Giessen, DE;
Horst Loeb, Giessen, DE;
Hans Juergen Leiter, Freising, DE;
Hans-peter Harmann, Wettenberg, DE;
Karl-Heinz Schartner, Giessen, DE;
Horst Loeb, Giessen, DE;
Hans Juergen Leiter, Freising, DE;
Hans-Peter Harmann, Wettenberg, DE;
Astrium GmbH, Munich, DE;
Abstract
A high-frequency electron source includes a discharge chamber having at least one gas inlet for a gas to be ionized and at least one extraction opening for electrons. The high-frequency electron source also includes a first electrode at least partially surrounding the discharge chamber and a keeper electrode at least partially surround the discharge chamber. The first electrode and the keeper electrode are configured to provide a high-frequency electric field therebetween.