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US 5,975,581 AGranted
System for confirming the authenticity of an article using a magnetic reader
AssigneeSentry Technology Corp.
InventorsThomas A. Nicolette, Peter Y. Zhou, Dexing Pang
Life of this patent
Estimating the term…
Abstract
A method for confirming the authenticity of an article including placing a semi hard piece of material on an article then printing a magnetic pattern on the semi hard piece of material. In order to view the pattern, a viewer containing a suspension of materials will be placed over the semi hard piece of material. The suspension of materials will then orient in the presence of a magnetic field adjacent to the magnetic material.
Claims4
A method for confirming the authenticity of an article comprising;
- placing a semi hard piece of material on an article;
- printing a magnetic pattern on the semi hard piece of material;
- and
- placing a suspension of materials which orient in the presence of a magnetic field adjacent said magnetic pattern.
1 more element
A system for confirming the authenticity of an article comprising;
- a semi hard piece of material disposed on an article;
- magnetic pattern disposed on the semi hard piece of material;
- and
- a suspension of materials which orient in the presence of a magnetic field adjacent said magnetic pattern.
1 more element
Dependencies are inferred from the claim text.