Dispensing system for applying DNA taggants used in combinations to tag articles
US11801512B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2021 |
| Grant date | Oct 31, 2023 |
| Priority date | — |
| Expiry date | Aug 2, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2200/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dispersant system comprises a plurality of taggant vessels, each having a taggant that corresponds to a position in a tag string and a computer controller convert the tag string into a selection of a taggant set while computer-controlled valves allow or block a flow of taggants to a manifold output tube. From the output tube, a mix of the taggants flow to form a dispersant formed according to the tag string. A nozzle disperses the dispersant onto an object to be tagged, possibly atomized with air. The taggant can comprise a DNA taggant comprising a static portion and a dynamic portion that is unique to each tag string position. Tag strings for adjacent lots might have a low Hamming distances to reduce cross-contamination and/or have redundancy for error detection and correction and selected so that consumption of taggants evens out over the plurality of taggant vessels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.