Magnetic recording medium comprising a magnetic film layer and a coating of purified perfluoropolyether lubricant
US5468552A · kind A · utility
4Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1993 |
| Grant date | Nov 21, 1995 |
| Priority date | — |
| Expiry date | Aug 26, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31544
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium having coated thereon a lubricant of such a purity that no impurities and low molecular weight species are substantially detected by gel permeation chromatography.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.