G11B 7/08 Disposition or mounting of heads or light sources relatively to record carriers
Introduced: September 1968
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 > Disposition or mounting of heads or light sources relatively to record carriers
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) > Disposition or mounting of heads or light sources relatively to record carriers
Of 6 combined children, 3 exist in both systems.
3 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G11B 7/085 with provision for moving the light beam into, or out of, its operative position since 1985 +3 CPC IPC+CPC Available in IPC and CPC
- G11B 7/09 with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following since 1985 +10 CPC IPC+CPC Available in IPC and CPC
- G11B 7/10 Interchangeable mountings, e.g. for replacement of head without readjustment 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