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:
Dec. 02, 2003
Filed:
Jun. 20, 2001
Applicant:
Inventors:
Curtiss D. Hanson, Cedar Falls, IA (US);
Paul Trent, Waterloo, IA (US);
Assignee:
University of Northern Iowa Research Foundation, Cedar Falls, IA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 5/944 ; H01J 4/900 ;
U.S. Cl.
CPC ...
B01D 5/944 ; H01J 4/900 ;
Abstract
A variable potential ion guide for placement within the reflectron of a time-of-flight mass spectrometer includes an elongate resistive electrode placed axially within the reflectron. The electrode may be a non-conductive monofilament coated with a resistive polymer coating, with one end of the electrode coupled to a high potential source, the electrode carrying a potential gradient along its length.