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IPC Subgroup
G11B 5/84

Processes or apparatus specially adapted for manufacturing record carriers

Introduced: September 1968

Last revised: January 2006

Full Title

Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor > Processes or apparatus specially adapted for manufacturing record carriers

Classification Context

Section:
PHYSICS
Class:
INFORMATION STORAGE
Subclass:
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER

Additional Content

Processes involving a single technical art, in general, and for which provision exists elsewhere, see the relevant places, e.g. , , for painting, shaping, evaporation coating and galvanizing in general , ,

7 direct subcodes

Child Classifications

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  • G11B 5/848 Coating a support with a magnetic layer by extrusion
  • G11B 5/85 Coating a support with a magnetic layer by vapour deposition
  • G11B 5/851 Coating a support with a magnetic layer by sputtering
  • G11B 5/852 Orientation in a magnetic field
  • G11B 5/855 Coating only part of a support with a magnetic layer
  • G11B 5/858 Producing a magnetic layer by electro-plating or electroless plating

Top Applicants

Top 10 applicants by patent filingsfor class G11, 2013–2023, worldwide · Source: EPO PATSTAT

  1. MICRON TECHNOLOGY US 10,574
  2. SK HYNIX KR 9,138
  3. SAMSUNG ELECTRONICS COMPANY KR 9,004
  4. TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 3,739
  5. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 3,443
  6. INTEL CORPORATION US 2,952
  7. SANDISK TECHNOLOGIES US 2,905
  8. WESTERN DIGITAL TECHNOLOGIES US 2,630
  9. TOSHIBA CORPORATION JP 2,593
  10. SEAGATE TECHNOLOGY US 2,472