Microparticles with visual identifying means

Details Microparticles with visual identifying means Microparticles with visual identifying means

1979-08-20

1983-06-28

Gron, Teddy S.

Compositions

Nonreactive analytical, testing, or indicating compositions

149 2, 149 21, 25230136, 252965, 436 56, G01N 3322, B32B 300, C09K 300, C09F 302

Patent

active

043904521

ABSTRACT:
Microparticles encoded for retrospective identification of substances into which they are incorporated. The novel microparticles have flat surfaces bearing repetitive identifying indicia such as alphanumerics which can be visually interpreted under magnification. The indicia may provide only part or all of the code.

REFERENCES:
patent: Re29334 (1977-08-01), Ryan et al.
patent: 2687367 (1954-08-01), Burrin
patent: 3128744 (1964-04-01), Jefferts 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
patent: 3967990 (1976-07-01), Ryan et al.
patent: 4053433 (1977-10-01), Lee
patent: 4131064 (1978-12-01), Ryan et al.
patent: 4197104 (1980-04-01), Krystyniak et al.

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