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CPC Subgroup
G11B 7/24018

Laminated discs (G11B7/24015 takes precedence)

Full Title

Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation , reproducing using an optical beam at lower power ; Record carriers therefor (G11B11/00, G11B13/00 take precedence) > Record carriers characterised by shape, structure or physical properties, or by the selection of the material (characterised by the arrangement of information on the carrier G11B7/007) > Laminated discs (G11B7/24015 takes precedence)

3 direct subcodes

Child Classifications

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  • G11B 7/24021 provided with a special shape or structure for centering or eccentricity prevention, e.g. alignment
  • G11B 7/24024 Adhesion or bonding, e.g. specific adhesive layers
  • G11B 7/24027 Layers; Shape, structure or physical properties thereof (G11B7/24021, G11B7/24024 take precedence)

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