Durable security devices and security articles employing such devices
US7243951B2 · kind B2 · utility
5Cited by
68References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2003 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Aug 1, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24851
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Durable security devices that are resistant to chemical attack and mechanical degradation and security articles employing such devices, are provided. By way of the durable security device of the present invention, opposing longitudinal borders adjacent an information-bearing layer are sealed, thereby preventing corrosive and/or degrading materials from reaching this layer through these sealed borders. In a preferred embodiment, at least a portion of the information-bearing layer is fully encapsulated, thereby rendering this portion or layer and the information conveyed thereby, impervious to chemical attack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.