CPC Subgroup
G11B 5/70 on a base layer
Full Title
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
8 direct subcodes
Child Classifications
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- G11B 5/702 characterised by the bonding agent
- G11B 5/706 characterised by the composition of the magnetic material
- G11B 5/708 characterised by addition of non-magnetic particles to the layer
- G11B 5/71 characterised by the lubricant
- G11B 5/712 characterised by the surface treatment or coating of magnetic particles
- G11B 5/714 characterised by the dimension of the magnetic particles
- G11B 5/716 characterised by two or more magnetic layers
Top Applicants
Top 10 applicants by patent filingsfor class G11, 2013–2023, worldwide · Source: EPO PATSTAT
- MICRON TECHNOLOGY US 12,397
- SAMSUNG ELECTRONICS COMPANY KR 12,238
- SK HYNIX KR 11,371
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 4,601
- INTEL CORPORATION US 3,874
- IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 3,866
- SANDISK TECHNOLOGIES US 3,151
- SK HYNIX 3,143
- SAMSUNG ELECTRONICS COMPANY 3,073
- WESTERN DIGITAL TECHNOLOGIES US 2,961