IPC Main Group
G11B 20/00 Signal processing not specific to the method of recording or reproducing; Circuits therefor
Introduced: January 1985
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- INFORMATION STORAGE
- Subclass:
- INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5 direct subcodes
Child Classifications
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- G11B 20/02 Analogue recording or reproducing
- G11B 20/1 Digital recording or reproducing
- G11B 20/2 for correction of skew for multitrack recording
- G11B 20/22 for reducing distortions
- G11B 20/24 for reducing noise
Top Applicants
Top 10 applicants by patent filingsfor class G11, 2013–2023, worldwide · Source: EPO PATSTAT
- MICRON TECHNOLOGY US 10,574
- SK HYNIX KR 9,138
- SAMSUNG ELECTRONICS COMPANY KR 9,004
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 3,739
- IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 3,443
- INTEL CORPORATION US 2,952
- SANDISK TECHNOLOGIES US 2,905
- WESTERN DIGITAL TECHNOLOGIES US 2,630
- TOSHIBA CORPORATION JP 2,593
- SEAGATE TECHNOLOGY US 2,472