Identification medium, article, identification device, and method of identifying identification medium
US7812937B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Aug 23, 2007 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Nov 2, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D2033/26
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An identifying medium comprises an optical functional layer that is optically identifiable and comprises a layer containing microcapsules. The microcapsule contains a material that occurs color change by breaking the microcapsule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.