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:
Nov. 20, 2007
Filed:
Sep. 03, 2004
Applicants:
Roger Francis Golder, Ely, GB;
Roger Fane Sewell, Newnham, GB;
Danielle Emma Toutoungi, Cambridge, GB;
Inventors:
Roger Francis Golder, Ely, GB;
Roger Fane Sewell, Newnham, GB;
Danielle Emma Toutoungi, Cambridge, GB;
Assignee:
Smiths Detection - Waterford Limited, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 27/00 (2006.01); G01N 27/60 (2006.01); G01N 37/00 (2006.01); G01N 15/00 (2006.01); G01N 15/02 (2006.01); G06F 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Particle detection and characterizing apparatus has an insulating tube along which the particles flow. Five electrodes spaced along the outside of the tube are connected via amplifiers to a processor arranged to measure the charge on the particles. The apparatus also includes a laser and photomultiplier tube arranged to measure the size of the particles so that the nature of the particles can be characterized from their electrical charge and size.