Magnetic fluid incorporating fine magnetic powder and method for making the same
US4576725A · kind A · utility
16Cited by
18References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1984 |
| Grant date | Mar 18, 1986 |
| Priority date | — |
| Expiry date | Jun 13, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2998/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic fluid having a base liquid and magnetic particles with so small average particle diameter as to be of some hundreds of angstroms dispersed in the base liquid. Such a magnetic fluid is produced by ejecting a molten magnetic metal adiabatically from an expansion nozzle against a bath of a base liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.