Method of making magnets by polymer-coating magnetic powder
US3933536A · kind A · utility
52Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1972 |
| Grant date | Jan 20, 1976 |
| Priority date | — |
| Expiry date | Nov 3, 1992 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/58
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Magnets are produced by dissolving in a solvent organic polymer which is a binder for magnetic powder, adding a magnetic powder to the solution, then adding to the solution a vehicle in which the polymer is insoluble. The vehicle is added until the polymer has precipitated onto the magnetic particles. These coated particles are then dried and hot pressed within an orienting magnetic field to produce the magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.