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:
Oct. 22, 2019
Filed:
Aug. 19, 2014
Applicants:
Jonathan Atkinson, Watford, GB;
Alastair Clark, Watford, GB;
Bruce Grant, Watford, GB;
Inventors:
Assignee:
SMITHS DETECTION-WATFORD LIMITED, Hertfordshire, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/62 (2006.01); H01J 49/06 (2006.01); H01J 49/00 (2006.01);
U.S. Cl.
CPC ...
H01J 49/061 (2013.01); G01N 27/622 (2013.01); H01J 49/0045 (2013.01);
Abstract
An ion mobility spectrometer comprising an ionizer for ionizing a sample; a detector separated from the ionizer by a drift chamber along which ions can travel from the ionizer toward the detector; a gate for controlling the passage of ions from the ionizer to the drift chamber; an ion modifier arranged between the ionizer and the detector and comprising a first electrode and a second electrode; and a voltage provider configured to provide a time varying voltage between the first electrode and the second electrode wherein the time varying voltage has a frequency of at least 2.5 MHz.