Authentication method and apparatus for use with compressed fluid printed swatches
US7044376B2 · kind B2 · utility
24Cited by
9References
49Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2003 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Oct 20, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2019/06225
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Authentication systems, apparatus, and methods authenticate an identification marking including a nanocrystalline material. One or more properties of the marking are ascertained to provide a measured profile. The measured profile is compared to at least one member of a closed set of reference profiles. Each reference profile has predetermined values of one or more properties. Each reference profile is unique within the set. At least one reference profile is characteristic of an indicator material in a nanocrystalline morphology and non-characteristic of the same indicator material in a bulk morphology.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.