Magnetic recording medium
US4202932A · kind A · utility
39Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1978 |
| Grant date | May 13, 1980 |
| Priority date | — |
| Expiry date | Oct 16, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium comprising a thin film of magnetic material disposed upon a non-magnetic substrate wherein the magnetic material is an alloy of cobalt with a second constituent which may be rhenium, ruthenium or osmium. The magnetic material will have a coercive force of up to 800 Oe and a squareness ratio of up to 98%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.