Patent · US Expired

Magnetic recording medium

US6936340B2 · kind B2 · utility

2Cited by

12References

24Claims

0Family size

Assignee

Imation Corp. · US

Inventors

Helmut Jakusch · Bischofswerda, DE
Albert Kohl · Laumersheim, DE
Peter Heilmann · Bad Dürkheim, DE
Ronald J. Veitch · Frankenthal (Pfalz), DE
Ria Kress · Ludwigshafen, DE
Stefan Müller · Wetzlar, DE
Johannes Sandrock · Kehl, DE
Hartmut Heene · Muldenstein, DE

Key dates

Filing date	Apr 6, 2001
Grant date	Aug 30, 2005
Priority date	—
Expiry date	Jul 5, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/269
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Multilayer magnetic recording medium which is suitable for high recording densities and the recording of digital data, has very good electromagnetic recording properties and good surface smoothness and can absorb a large amount of lubricant in the lower layer and has at least one upper magnetic recording layer less than 0.5 μm thick and at least one lower layer which contains a magnetically soft pigment.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.