Deactivating element for magnetic marker and method of making same
US6774793B1 · kind B1 · utility
4Cited by
4References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Aug 9, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/2445
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A deactivating element for a magnetic surveillance marker has the form of a wire with substantially-circular cross-section in which alternating body segments are of a magnetizable material having a magnetic remanence of at least 0.2 Tesla and a non-magnetizable material respectively; the non-magnetizable material has a magnetic saturation of not more than 0.05 Tesla.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.