Process for producing acicular magnetic metallic particle powder
US4133677A · kind A · utility
39Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1977 |
| Grant date | Jan 9, 1979 |
| Priority date | — |
| Expiry date | Mar 31, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/065
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The process for producing acicular magnetic metallic particle powder with improved magnetic properties which include the characteristic steps for producing the acicular particles of metal oxide with homogeneous and dense coats of crystalline silica and to thereby protect the particles from heat-damages during the reduction thereof under high temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.