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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
G11B 5/708

characterised by addition of non-magnetic particles to the layer

Introduced: January 1985

Title

Titles differ between systems:

IPC: characterised by the addition of non-magnetic particles to the magnetic layer

CPC: characterised by addition of non-magnetic particles to the layer

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 addition of non-magnetic particles to the magnetic layer

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 addition of non-magnetic particles to the layer

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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