Composition of magnetic recording media
US4238341A · kind A · utility
11Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1979 |
| Grant date | Dec 9, 1980 |
| Priority date | — |
| Expiry date | Oct 12, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31877
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A composition of magnetic recording media consisting of a ferromagnetic powder such as .gamma.-Fe.sub.2 O.sub.3, a binder and single crystal alumina as a reinforcing agent. Single crystal .alpha.-alumina is preferably used as said single crystal alumina and its amount is preferably from 1 to 20% by weight based on the magnetic powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.