Method of manufacturing a titanium magnetic disk substrate
US4990362A · kind A · utility
13Cited by
0References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1990 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Feb 16, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/73919
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Titanium magnetic disk substrates are manufactured by preparing a base by stripping not less than 5 .mu.m from the surface layer of a titanium cold-rolled plate, and then forming a film of not less than 5 .mu.m consisting of 1 or more non-magnetic transition metal elements belonging to Groups IVA, VA, VIA, VIIA and VIIIA of the Periodic Table, on the surface of this base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.