Laminate, card, and housing
US-2025360742-A1 · Nov 27, 2025 · US
Security documents and colour laser marking methods for securing them
US8975211B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8975211-B2 |
| Application number | US-201113885750-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 2, 2011 |
| Priority date | Dec 7, 2010 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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A security document precursor including, in order, at least: a) a transparent biaxially stretched polyethylene terephthalate foil; b) a colorless color forming layer containing at least an infrared absorber, a color forming component and a polymeric binder; and c) a polymeric support; wherein the colorless color forming layer contains at least one component forming a compound having a melting temperature of less than 20° C. upon laser marking the colorless color forming layer with an infrared laser. Methods for securing a security document using the security document precursor are also disclosed.
First claim
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The invention claimed is: 1. A security document precursor including, in order, at least: a) a transparent biaxially stretched polyethylene terephthalate foil; b) a colourless colour forming layer containing at least an infrared absorber, a colour forming component and a polymeric binder; and c) a polymeric support; wherein the colourless colour forming layer contains at least one component forming a compound having a melting temperature of less than 20° C. upon laser markin…
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- What does patent US8975211B2 cover?
- A security document precursor including, in order, at least: a) a transparent biaxially stretched polyethylene terephthalate foil; b) a colorless color forming layer containing at least an infrared absorber, a color forming component and a polymeric binder; and c) a polymeric support; wherein the colorless color forming layer contains at least one component forming a compound having a melting t…
- Who is the assignee on this patent?
- Waumans Bart, Geuens Ingrid, Callant Paul, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification B41M5/327. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 10 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).