Title:
METHODS FOR IDENTIFICATION AND VERIFICATION
Document Type and Number:
WIPO Patent Application WO2001025820
Kind Code:
A3
Abstract:
An apparatus and method in which one or more taggants are detected by X-ray fluorescence analysis to identify or verify the article or its point of manufacture. The taggants are manufactured as part of the article or are placed into a coating, label, or otherwise embedded within the article for later verification of the presence or absence of the taggant. The detection apparatus (25) has an instrument housing (15) which contains various components. Gamma rays (30) from a source (20) are optionally focused by aperture (10) to impinge on a sample (11), which contains at least one taggant.
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Inventors:
KAISER BRUCE JOHN (US)
PRICE L STEPHEN (US)
WATSON DAVID J (US)
MEYER GERHARD A (US)
PRICE L STEPHEN (US)
WATSON DAVID J (US)
MEYER GERHARD A (US)
Application Number:
PCT/US2000/026415
Publication Date:
June 14, 2001
Filing Date:
September 26, 2000
Export Citation:
Assignee:
EDAX INC (US)
KAISER BRUCE JOHN (US)
PRICE L STEPHEN (US)
WATSON DAVID J (US)
MEYER GERHARD A (US)
KAISER BRUCE JOHN (US)
PRICE L STEPHEN (US)
WATSON DAVID J (US)
MEYER GERHARD A (US)
International Classes:
G01N23/223; (IPC1-7): G01N33/20; G01N21/76; G06K19/06; G01B15/06; A61N5/00; G21G5/00
Foreign References:
| US4476382A | 1984-10-09 | |||
| US4251726A | 1981-02-17 | |||
| US5185773A | 1993-02-09 | |||
| US5527707A | 1996-06-18 | |||
| US4767205A | 1988-08-30 | |||
| US4363965A | 1982-12-14 |
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