Method of encoding and decoding a glassy alloy strip to be used

Details Method of encoding and decoding a glassy alloy strip to be used Method of encoding and decoding a glassy alloy strip to be used

1993-04-06

1994-08-16

Zimmerman, John

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148304, 148403, 148565, 148903, 340572, C21D 952, H04B 159, G08B 1326

Patent

active

053383737

ABSTRACT:
A process for making a large number of magneto-mechanically resonant markers having distinct resonant characteristics is disclosed. The process comprises modifying at least one surface of a glassy metal alloy strip so as to cause the effective length of the alloy strip to be different from the physical length thereof. Resonant markers comprising alloy strips treated by the process of the present invention display unique and distinguishable resonant characteristics which gives the marker a unique identity. The resonant markers can be used for article surveillance, inventory control and personnel identification.

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