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:
Feb. 04, 1997
Filed:
Jun. 07, 1995
Applicant:
Inventors:
Marsbed Hablanian, Wellesley, MA (US);
Asoka Ratnam, Rockville, MD (US);
Assignee:
Varian Associates, Inc., Palo Alto, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; H01J / ; H01J / ;
U.S. Cl.
CPC ...
250288 ; 2504 / ; 250427 ;
Abstract
A single potential ion source includes a single conical electrode encircled by a cylindrical magnet. At least one filament is placed proximate to the electrode. This arrangement serves to accelerate electrons created by energy from the filament toward a center axis of the conical electrode. The electrons collide with gas particles to create a focused ion stream. The stream may be directed into a magnetic field in a mass spectrometer tube.