Controlling, regulating, or indicating speed

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

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; Starting; Stopping; Arrangements for control or regulation thereof > Controlling, regulating, or indicating speed

CPC:

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) > Driving; Starting; Stopping; Arrangements for control or regulation thereof > Controlling, regulating, or indicating speed

Of 6 combined children, 5 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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G11B 15/463 CPC only CPC only
G11B 15/467 in arrangements for recording or reproducing wherein both record carriers and heads are driven since 1985 +2 CPC IPC+CPC Available in IPC and CPC
G11B 15/48 Starting; Accelerating; Decelerating; Arrangements preventing malfunction during drive change IPC+CPC Available in IPC and CPC
G11B 15/50 by mechanical linkage, e.g. clutch IPC+CPC Available in IPC and CPC
G11B 15/52 by using signals recorded on, or derived from, record carrier IPC+CPC Available in IPC and CPC
G11B 15/54 by stroboscope; by tachometer 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