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. 15, 2013
Filed:
Oct. 01, 2009
Stephen John Penney, Middlesex, GB;
John E. A. Shaw, Middlesex, GB;
Paul J. Taylor, Woking, GB;
Steven Ian Bennett, Middlesex, GB;
Stephen John Penney, Middlesex, GB;
John E. A. Shaw, Middlesex, GB;
Paul J. Taylor, Woking, GB;
Steven Ian Bennett, Middlesex, GB;
Thorn Security Limited, Sunbury-on-Thames, Middlesex, GB;
Abstract
A particulate detector () comprises a radiation source () arranged to emit radiation in at least first and second predetermined wavebands towards a sampling region () suspected of containing particulates, and a detection element (), shielded from the radiation source (), and arranged to detect radiation from the sampling region () at least first and second instances. The radiation source () is such that the emissions in the wavebands temporarily overlap. The detector is such that, at the instances at which the radiation is detected, the relative contributions from the emissions in each predetermined waveband are distinguishable, thereby allowing characteristics of the particulates to be determined. The radiation source () may comprise a light emitting diode ().