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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
G11B 15/05

by sensing features present on or derived from record carrier or container (G11B15/16 takes precedence)

Introduced: January 1985

Title

Titles differ between systems:

IPC: by sensing features present on, or derived from, record carrier or container

CPC: by sensing features present on or derived from record carrier or container (G11B15/16 takes precedence)

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 > Control of operating function, e.g. switching from recording to reproducing > by sensing features present on, or derived from, record carrier or container

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) > Control of operating function, e.g. switching from recording to reproducing > by sensing features present on or derived from record carrier or container (G11B15/16 takes precedence)

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

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  • G11B 15/087 by sensing recorded signals since 1985 IPC+CPC Available in IPC and CPC
  • G11B 15/093 by sensing driving condition of record carrier, e.g. travel, tape tension since 1985 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class G11,2013–2023, worldwide · Source: EPO PATSTAT

  1. MICRON TECHNOLOGY US 10,574
  2. SK HYNIX KR 9,138
  3. SAMSUNG ELECTRONICS COMPANY KR 9,004
  4. TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 3,739
  5. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 3,443
  6. INTEL CORPORATION US 2,952
  7. SANDISK TECHNOLOGIES US 2,905
  8. WESTERN DIGITAL TECHNOLOGIES US 2,630
  9. TOSHIBA CORPORATION JP 2,593
  10. SEAGATE TECHNOLOGY US 2,472

Top Applicants (CPC)

Class G11,2013–2023, worldwide · Source: EPO PATSTAT

  1. MICRON TECHNOLOGY US 12,397
  2. SAMSUNG ELECTRONICS COMPANY KR 12,238
  3. SK HYNIX KR 11,371
  4. TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 4,601
  5. INTEL CORPORATION US 3,874
  6. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 3,866
  7. SANDISK TECHNOLOGIES US 3,151
  8. SK HYNIX 3,143
  9. SAMSUNG ELECTRONICS COMPANY 3,073
  10. WESTERN DIGITAL TECHNOLOGIES US 2,961