Patent · US Expired

Magnetic recording medium

US4543301A · kind A · utility

10Cited by
3References
8Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 10, 1983
Grant dateSep 24, 1985
Priority date
Expiry dateAug 10, 2003

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T428/265
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

A magnetic recording medium having a non-magnetic substrate on which a first bismuth Bi under layer, a first magnetic metal layer, a compound layer made of the magnetic metal, a second bismuth Bi under layer and a second magnetic metal layer are sequentially formed in this order.

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