Magnetic recording medium
US4840843A · kind A · utility
11Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1987 |
| Grant date | Jun 20, 1989 |
| Priority date | — |
| Expiry date | Oct 19, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a thin magnetic metal film and a protective layer mainly comprising carbon having a graphite structure containing at least one element selected from the group consisting of Mn, Mo, Nb, Ta, Ti, V, Cr and W.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.