IPC Subgroup
G11B 5/33 Structure or manufacture of flux-sensitive heads
Introduced: January 1985
Last revised: January 2006
Full Title
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor > Structure or manufacture of heads, e.g. inductive > Structure or manufacture of flux-sensitive heads
Classification Context
- Section:
- PHYSICS
- Class:
- INFORMATION STORAGE
- Subclass:
- INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
4 direct subcodes
Child Classifications
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- G11B 5/335 with saturated jig, e.g. for detecting second harmonic, balanced-flux head
- G11B 5/35 having vibrating elements
- G11B 5/37 using galvano-magnetic devices, e.g. Hall-effect devices
- G11B 5/39 using magneto-resistive devices
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