Medium for identifying matter to be identified and method for production thereof
US6740431B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2002 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Jun 19, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/916
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
In an identification medium for identifying an authenticity of an object either visually or optically by using an identification device, high polymer cholesteric liquid crystal is applied onto the object, onto a sticker adapted to be affixed to the object or onto a base for hot stamping onto the object, and the high polymer cholesteric liquid crystal is patterned, and/or a graphic representation layer such as a figure and letter is formed under or over the high polymer cholesteric liquid crystal to enhance the aesthetic quality of the identification medium or the object, and improve the capability to identify and prevent forgery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.