Fingerprinting system

Details Fingerprinting system Fingerprinting system

1996-08-21

1998-02-24

Bell, Janyce

Coating processes

Body member printing

427341, 427384, 118 315, A61B 5117

Patent

active

057210063

ABSTRACT:
A fingerprinting system including a substrate treated with a reagent solution including an aromatic polyhydroxy compound and an antioxidant, and a developer solution including a color forming water soluble metal salt, wherein background "aging" of the substrate and coating is inhibited.

REFERENCES:
patent: 3851619 (1974-12-01), Cofield, Jr. et al.
patent: 4262623 (1981-04-01), Smith, III et al.
patent: 4379178 (1983-04-01), Meadows et al.
patent: 4699077 (1987-10-01), Meadows et al.

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