Granulated particles for magnetic particles for magnetic recording, and process for producing the same
US5531922A · kind A · utility
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20Claims
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Key dates
| Filing date | Sep 12, 1995 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Sep 12, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/061
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are granulated particles for magnetic particles for magnetic recording, comprising: acicular ferric hydroxide oxide particles or acicular iron oxide particles; and at least one selected from the group consisting of semisynthetic starch and semisynthetic cellulose and having a bulk density of not less than 0.3 g/cm.sup.3 and a powdering ratio of not more than 40%, and a process for producing the granulated particles, and magnetic particles obtained from such granulated particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.