US Patent Issued to INFICON on Dec. 9 for "Ion source assembly with multiple elliptical filaments" (American, Swiss Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,494,358, issued on Dec. 9, was assigned to INFICON INC. (East Syracuse, N.Y.).

"Ion source assembly with multiple elliptical filaments" was invented by Michael Vollero (Manlius, N.Y.), Mario Weder (Landquart, Switzerland) and Jochen Wagner (Syracuse, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electron bombardment ion source assembly for use in a mass spectrometer and including an anode extending along an axis and surrounding an ionization volume. At least two filaments are each configured to thermionically emit electrons and are positioned outside the ionization volume and proximate to the anode. The at least two filaments each comprise an el...