Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
November 10, 2009
Patent Application Number
10518534
Date Filed
June 25, 2003
Patent Primary Examiner
Patent abstract
A method for visual marking of heat-treated substrates, in particular tempered glass panes. The method modifies a marking layer deposited on a surface of the substrate, that visually indicates that the heat treatment has been carried out, and produces a rough marking field on the surface of the substrate that the marking layer deposited on the substrate exhibits intimate adhesive bonding thereto, which marking layer cannot be completely removed using a mechanical mechanism.
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