Magnetized ink, paint or dye used on merchandise to prevent thef

Details Magnetized ink, paint or dye used on merchandise to prevent thef Magnetized ink, paint or dye used on merchandise to prevent thef

1988-02-19

1990-05-29

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

235493, 340568, G08B 1314

Patent

active

049299280

ABSTRACT:
The invention relates to a procedure for applying an anti-theft device on goods, and ink/dye/paint for use therewith. The ink to be applied on the goods is mixed with magnetizable particles, the particles being magnetized, and demagnetization being effect upon payment or leaving the premises. An alarm signal is emitted if a marked article which has not been demagnetized, is taken out.

REFERENCES:
patent: 3725895 (1973-04-01), Hayes
patent: 4042807 (1977-08-01), Donabin et al.
patent: 4063229 (1977-12-01), Welsh et al.
patent: 4438462 (1984-03-01), Koester et al.
patent: 4568921 (1986-02-01), Pokalsky
patent: 4574274 (1986-03-01), Pinneo
patent: 4575624 (1986-03-01), Klinkhardt
patent: 4581524 (1986-04-01), Hoekman et al.
patent: 4652863 (1987-03-01), Hultman
patent: 4717438 (1988-01-01), Benge et al.
"Means for Replicating Magnetic, Images & Bar Codes", IBM Tech. Discl. Bulltn., R. A. Meyers, vol. 20, #5, Oct. 1977.

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