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Machine translation
1. (WO1979000721) METHOD AND SYSTEM FOR DETECTION OF THIN METAL LAYERS IN PACKAGED ARTICLES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000721    International Application No.:    PCT/US1979/000117
Publication Date: 04.10.1979 International Filing Date: 02.03.1979
IPC:
G01N 22/00 (2006.01), G07C 3/14 (2006.01)
Applicants:
Inventors:
Priority Data:
884367 07.03.1978 US
Title (EN) METHOD AND SYSTEM FOR DETECTION OF THIN METAL LAYERS IN PACKAGED ARTICLES
(FR) METHODE ET SYSTEME DE DETECTION DE COUCHES METALLIQUES MINCES DANS DES ARTICLES EMPAQUETES
Abstract: front page image
(EN)Metal layers (20) of extreme thinness, of the order of fifty Angstroms and greater are detected by use of microwave energy (26) so propagated as to permit determination of the presence or absence of the metal (20) in a detection zone (S) of limited extent outwardly of the issuance location of such propagated energy. Apparatus (24, 28) is provided for propagating microwave energy having a characteristic which changes with propagation distance from a maximum value at the energy issuance location to a minimum value first exhibited at the outward end of the detection zone (S).
(FR)Des couches metalliques (20) d"extreme minceur, de l"ordre de cinquante AngstrOms et plus sont detectees par des micro-ondes (26) propagees pour permettre la determination de la presence ou absence du metal (20) dans une zone de detection (s) limitee dans son etendue exterieure au point d"emission de cette energie propagee. Un appareil (24, 28) assure la propagation d"energie de micro-ondes ayant une caracteristique qui change avec la distance de propagation passant d"une valeur maximum au point d"emission a une valeur minimum etablie en premier lieu a l"extremite exterieure de la zone de detection (s).
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)