CDs

Full Title

Record carriers by type > Disc-shaped record carriers > characterised in that the disc is based on a specific recording technology > Optical discs > CDs

3 direct subcodes

Child Classifications

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G11B 2220/255 CD-I, i.e. CD-interactive
G11B 2220/2554 CD-V [CD-Video], CDV, or CD+V, as defined in IEC 61104
G11B 2220/2558 CD-XA format, i.e. eXtended architecture extension of the CD-ROM standard

Top Applicants

Top 10 applicants by patent filingsfor 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