Tracer-containing composition
US4152271A · kind A · utility
10Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1974 |
| Grant date | May 1, 1979 |
| Priority date | — |
| Expiry date | Jan 28, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/13
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dry homogeneous admixture including a bulk material, a micro-ingredient, and a solid particulate tracer in a preselected ratio to the micro-ingredient, comprising a vehicle of ground iron or other ferromagnetic material that will become magnetized by a magnetic field, but loses its magnetism in the absence of such a field. The vehicle itself serves as the tracer when used with magnetic detection techniques. Additional tracers are provided by coating the vehicle with detectable coatings such as dyes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.