Method for coloring a transparent article made of...

Bleaching and dyeing; fluid treatment and chemical modification – Dyeing process utilizing electric – magnetic – or wave energy;...

Reexamination Certificate

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Details

C008S115530, C008S589000, C008S930000, C008S933000, C008S506000, C427S457000, C427S500000, C427S503000, C427S508000, C427S532000, C427S558000

Reexamination Certificate

active

06911055

ABSTRACT:
The invention concerns a method which comprises irradiating at least one face of an article with UV radiation, causing the article to be photodegraded over a thickness of at least 1 μm and contacting the irradiated face of the article with a coloring agent, so as to diffuse the coloring agent in the entire thickness of the photodegraded surface layer of the article. The invention is useful for optical and ophthalmologic articles.

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