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IPC Main Group
G11B 5/00

Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
PHYSICS
Class:
INFORMATION STORAGE
Subclass:
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER

Related Keywords

floppy DISC(S)

15 direct subcodes

Child Classifications

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  • G11B 5/004 Recording on, or reproducing or erasing from, magnetic drums
  • G11B 5/008 Recording on, or reproducing or erasing from, magnetic tapes or wires
  • G11B 5/4 Protective measures on heads, e.g. against excessive temperature
  • G11B 5/41 Cleaning of heads
  • G11B 5/455 Arrangements for functional testing of heads; Measuring arrangements for heads
  • G11B 5/465 Arrangements for demagnetisation of heads
  • G11B 5/86 Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers

Top Applicants

Top 10 applicants by patent filingsfor 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