G11B 7/24 Record carriers characterised by shape, structure or physical properties, or by the selection of the material (characterised by the arrangement of information on the carrier G11B7/007)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Record carriers characterised by shape, structure or physical properties, or by the selection of the material
CPC: Record carriers characterised by shape, structure or physical properties, or by the selection of the material (characterised by the arrangement of information on the carrier G11B7/007)
Full Title
Full titles differ between systems:
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor > Record carriers characterised by shape, structure or physical properties, or by the selection of the material
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation , reproducing using an optical beam at lower power ; Record carriers therefor (G11B11/00, G11B13/00 take precedence) > Record carriers characterised by shape, structure or physical properties, or by the selection of the material (characterised by the arrangement of information on the carrier G11B7/007)
Of 11 combined children, 9 exist in both systems.
2 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.
4 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G11B 7/24003 Shapes of record carriers other than disc shape since 2013 IPC+CPC Available in IPC and CPC
- G11B 7/24018 Laminated discs (G11B7/24015 takes precedence) since 2013 IPC+CPC Available in IPC and CPC
- G11B 7/2403 Layers; Shape, structure or physical properties thereof since 2013 IPC+CPC Available in IPC and CPC
- G11B 7/2407 Tracks or pits; Shape, structure or physical properties thereof (layout of tracks or pits used as the identification information G11B7/007) since 2013 IPC+CPC Available in IPC and CPC
- G11B 7/24094 Indication parts or information parts for identification since 2013 IPC+CPC Available in IPC and CPC
- G11B 7/24097 Structures for detection, control, recording operation or replay operation; Special shapes or structures for centering or eccentricity prevention (within laminated discs G11B7/24021); Arrangements for testing, inspecting or evaluating; Containers, cartridges or cassettes since 2013 IPC+CPC Available in IPC and CPC
- G11B 7/241 characterised by the selection of the material since 2006 IPC+CPC Available in IPC and CPC
- G11B 7/26 Apparatus or processes specially adapted for the manufacture of record carriers +5 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class G11,2013–2023, worldwide · Source: EPO PATSTAT
- MICRON TECHNOLOGY US 10,574
- SK HYNIX KR 9,138
- SAMSUNG ELECTRONICS COMPANY KR 9,004
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 3,739
- IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 3,443
- INTEL CORPORATION US 2,952
- SANDISK TECHNOLOGIES US 2,905
- WESTERN DIGITAL TECHNOLOGIES US 2,630
- TOSHIBA CORPORATION JP 2,593
- SEAGATE TECHNOLOGY US 2,472
Top Applicants (CPC)
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