Expression codes for microparticle marks based on signature strings
US8033450B2 · kind B2 · utility
12Cited by
168References
41Claims
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Key dates
| Filing date | Mar 13, 2007 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Jul 10, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F3/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system, apparatus, and method for identifying and authenticating articles using expression codes obtained from marks incorporating microparticles on or in articles, article packaging, or article labeling where the expression codes are based on signature strings generated relative to attributes of valid individual microparticles. The system, apparatus, and method can also enable the serialization of articles over and above the code-formulation that is achievable with multi-layered color-coded microparticles or single expression microparticles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.