Tagging particles which are easily detected by luminescent response, or magnetic pickup, or both
US4131064A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1977 |
| Grant date | Dec 26, 1978 |
| Priority date | — |
| Expiry date | Jul 15, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/13
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Small particles for tagging of objects to be identified comprise luminescent material plus other material which provides information indicia for tagging purposes. Included in the tagging particles are very small particles of magnetic material which is reflective both for the radiations which excite the luminescent material and also for the radiations generated by the excited luminescent material. The inclusion of the reflective magnetic particles introduces only a minimal decrease in the effectiveness of the luminescent material to provide a spotting or locating function. The particles may thus be located either by their luminescent response, or by magnetic pickup, or both. Inorganic species of these particles are especially useful for tagging explosives for post-explosion indentification of the explosives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.