G11B 15/02 Control of operating function, e.g. switching from recording to reproducing
Introduced: September 1968
Full Title
Full titles differ between systems:
Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function > Control of operating function, e.g. switching from recording to reproducing
Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function (driving or guiding heads G11B3/00 - G11B7/00, G11B21/00) > Control of operating function, e.g. switching from recording to reproducing
Of 8 combined children, 6 exist in both systems.
2 codes are CPC-only extensions.
3 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G11B 15/04 Preventing, inhibiting, or warning against accidental erasing or double recording (G11B15/05 takes precedence) IPC+CPC Available in IPC and CPC
- G11B 15/05 by sensing features present on or derived from record carrier or container (G11B15/16 takes precedence) since 1985 IPC+CPC Available in IPC and CPC
- G11B 15/10 Manually-operated control; Solenoid-operated control +2 CPC IPC+CPC Available in IPC and CPC
- G11B 15/12 Masking of heads; Selecting or switching of heads between operative and inoperative functions ; Masking of beams, e.g. of light beams +1 CPC IPC+CPC Available in IPC and CPC
- G11B 15/16 by sensing presence, absence or position of record carrier or container 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