Method of tagging with color-coded microparticles

Details Method of tagging with color-coded microparticles Method of tagging with color-coded microparticles

1975-02-19

1977-10-11

Padgett, Benjamin R.

Compositions

Nonreactive analytical, testing, or indicating compositions

44 51, 44 59, 149 18, 149 195, 149 1991, 149 21, 1491094, 428373, 428378, 428381, 428383, 428407, C09K 300, C10L 110, C06B 2300

Patent

active

040534332

ABSTRACT:
An improvement in the known method of tagging individual units of production of a substance with microparticles for retrospective identification is disclosed. The improvement comprises the use of microparticles which are encoded with an orderly sequence of visually distinguishable colored segments. Decoding of the microparticles can be accomplished with a microscope or other magnifying device.

REFERENCES:
patent: 2885366 (1959-05-01), Iler
patent: 3366573 (1968-01-01), Feuer
patent: 3663685 (1972-05-01), Evans
patent: 3772099 (1973-11-01), Ryan et al.
patent: 3772200 (1973-11-01), Livesay
patent: 3835782 (1974-09-01), Griffith et al.
patent: 3861886 (1975-01-01), Meloy
patent: 3897284 (1975-07-01), Livesay

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