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PCE
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DIFF Subgroup
G11B 5/712

characterised by the surface treatment or coating of magnetic particles

Introduced: January 1985

Full Title

Full titles differ between systems:

IPC:

Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor > Record carriers characterised by the selection of the material > comprising one or more layers of magnetisable particles homogeneously mixed with a bonding agent > on a base layer > characterised by the surface treatment or coating of magnetic particles

CPC:

Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (G11B11/00 take precedence) > Record carriers characterised by the selection of the material > comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent > on a base layer > characterised by the surface treatment or coating of magnetic particles

No child classifications to compare. This is a leaf node in both IPC and CPC.