Article identification

Details Article identification Article identification

1983-08-10

1986-08-19

Smith, John D.

Coating processes

Fraud or tamper detecting

427157, 427292, 427197, 427198, 427199, 4273855, 4273881, B41M 314

Patent

active

046069275

ABSTRACT:
A minute color coded identifier having a longitudinal axis, which is transversely color banded about its periphery. The identifier may, for example, be 0.015 inch long, have a transverse dimension of about 0.004 inch and have seven or more color bands such as to be observable under a power of 10 or more magnification. A method of making such identifiers, as well as a method of applying the same to articles for later identification is disclosed that involves a dispersion of identifiers in a transparent and hardenable cementitious liquid such as nitrocellulose in a suitable volatile solvent such as acetone and ethyl acetate, e.g. a common clear fingernail polish.

REFERENCES:
patent: 447336 (1891-03-01), MacDonough
patent: 4097279 (1978-06-01), Whitehead

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