Electricity: measuring and testing – Particle precession resonance
Reexamination Certificate
2007-11-06
2007-11-06
Arana, Louis M. (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
C324S307000
Reexamination Certificate
active
11642418
ABSTRACT:
This invention relates to a combined nuclear quadrupole resonance and X-ray contraband detection system with a metal shield alarm that is activated when the area of the metal in the object being scanned as determined by the resonance frequency shifts of the NQR sensors exceeds the area of the metal in the object being scanned as determined by X-rays by an amount sufficient to shield contraband.
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Arana Louis M.
E. I. du Pont de Nemours and Company
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