Magnetic tag process

Details Magnetic tag process Magnetic tag process

1978-09-21

1980-04-08

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Self-supporting particle making

149 2, 149 21, 250302, 2423011R, 252408, 427157, C03B 1910

Patent

active

041971043

ABSTRACT:
Ferrite particles having a plurality of distinct Curie temperatures are encapsulated within a glass matrix to provide tagging material especially useful in identifying explosive materials even after detonation. In one embodiment, phosphor is dispersed within the glass matrix or an intrinsically fluorescent glass is employed to facilitate visual identification and collection of tag particles following detonation. The tags are also usable in tagging other articles, especially where harsh environmental conditions are likely to be encountered.

REFERENCES:
patent: 3441396 (1969-04-01), D'Eustachio et al.
patent: 3656921 (1972-04-01), Wilcox
patent: 3736500 (1973-05-01), Berkowitz et al.
patent: 3772099 (1973-11-01), Ryan et al.
patent: 3772200 (1973-11-01), Livesay
patent: 3967990 (1976-07-01), Ryan et al.
patent: 4131064 (1978-12-01), Ryan et al.
Magnetic Tagging of Explosives Utilizing Curie Point Indentification, G. N. Roberts, U.S. Dept. of the Treasury, 8-1978, Contract #F04701-77-C-0078.

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