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CPC Subgroup
G11B 21/20

while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier

Full Title

Head arrangements not specific to the method of recording or reproducing > Supporting the heads; Supporting the sockets for plug-in heads > while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier

1 direct subcode

Child Classifications

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  • G11B 21/21 with provision for maintaining desired spacing of head from record carrier, e.g. fluid-dynamic spacing, slider

Top Applicants

Top 10 applicants by patent filingsfor 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