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. 23, 2025
Filed:
Jun. 29, 2021
Smiths Detection-watford Limited, Hemel Hempstead, GB;
Oliver Jon Lipscombe, Hemel Hempstead, GB;
Alex Edward Parker, Hemel Hempstead, GB;
Alastair Clark, Hemel Hempstead, GB;
Alastair Beadle, Hemel Hempstead, GB;
Smiths Detection-Watford Limited, Hemel Hempstead, GB;
Abstract
A method of operating an air purification system (″) of an ion mobility spectrometer, the method comprising: operating the ion mobility spectrometer in a first sampling mode comprising circulating a flow of air around a closed air circulation system comprising a drift chamber () of the ion mobility spectrometer and a first sieve () of the air purification system; and operating the ion mobility spectrometer in a first regeneration mode comprising heating the first sieve and circulating a first flow of air through a second sieve () of the air purification system and through the drift chamber () while passing a second flow of air through the first sieve () to an outtake ().