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. 08, 2011
Filed:
Aug. 02, 2007
Scott T. Quarmby, Round Rock, TX (US);
George B. Guckenberger, Austin, TX (US);
Scott T. Quarmby, Round Rock, TX (US);
George B. Guckenberger, Austin, TX (US);
Thermo Finnigan LLC, San Jose, CA (US);
Abstract
An electron source can selectively provide a first stream of electrons that travels in a direction along an imaginary line to a location remote from the electron source, or a second stream of electrons that travels in the direction along the line to the location. The electron source includes a first electron emitter for selectively emitting electrons for the first stream, and a second electron emitter for selectively emitting electrons for the second stream. A different aspect relates to a method for operating an apparatus having an electron source that includes first and second electron emitters. The method includes selectively producing a first stream of electrons that travels from the first electron emitter in a direction along an imaginary line to a location remote from the electron source, or a second stream of electrons that travels from the second electron emitter in the direction along the line to the location.