Marking substrates

Details Marking substrates Marking substrates

2005-08-30

2005-08-30

McPherson, John A. (Department: 1756)

Radiation imagery chemistry: process, composition, or product th

Visible imaging using radiation only other than heating by...

C430S021000, C430S945000

Reexamination Certificate

active

06936410

ABSTRACT:
A method of marking a substrate includes contacting the substrate with a composition and contacting the composition with energy sufficient to produce a change in the composition that can be detected optically. In some embodiments, the change produces a white mark.

REFERENCES:
patent: 5667580 (1997-09-01), Babler
patent: 6503310 (2003-01-01), Sullivan
patent: 1-215589 (1989-08-01), None
patent: 01-215589 (1998-08-01), None
PCT Search Report dated Jul. 9, 2003.

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