Taggant particle group; and anti-counterfeit ink, anti-counterfeit toner, anti-counterfeit sheet, and anti-counterfeit medium comprising same
US9127181B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2011 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Nov 21, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A main object of the invention is to provide a taggant particle group that has a plurality of authentication steps and an excellent anti-counterfeit effect and can be applied to various anti-counterfeit media. The invention attains the object by providing a taggant particle group which is an aggregate of taggant particles which individually have a plurality of identification information items, wherein one identification information item among the plurality of identification information items possessed by the individual particles is common identification information that is possessed in common by the taggant particles that constitute the taggant particle group, and another identification information item among the plurality of identification information items possessed by the individual particles is non-common identification information of which the authenticity can be determined in combination with other identification information items possessed by other taggant particles that constitute the taggant particle group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.