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PCE
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DIFF Subgroup
H01F 1/34

non-metallic substances, e.g. ferrites

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties > of inorganic materials > characterised by their coercivity > of soft-magnetic materials > non-metallic substances, e.g. ferrites

CPC:

Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties > of inorganic materials (H01F1/44 takes precedence) > characterised by their coercivity > of soft-magnetic materials > non-metallic substances, e.g. ferrites

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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  • H01F 1/38 amorphous, e.g. amorphous oxides since 1995 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class H01,2013–2023, worldwide · Source: EPO PATSTAT

  1. TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 43,574
  2. SAMSUNG ELECTRONICS COMPANY KR 42,206
  3. LG CHEM KR 21,383
  4. APPLIED MATERIALS US 20,441
  5. LG ENERGY SOLUTION KR 20,279
  6. SAMSUNG DISPLAY KR 19,725
  7. CHINESE ACADEMY OF SCIENCES 19,400
  8. TOYOTA MOTOR CORPORATION 18,819
  9. SGCC(STATE GRID CORPORATION OF CHINA) 18,082
  10. TOKYO ELECTRON JP 17,634

Top Applicants (CPC)

Class H01,2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG ELECTRONICS COMPANY KR 37,897
  2. TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 36,116
  3. APPLIED MATERIALS US 21,640
  4. LG ENERGY SOLUTION KR 20,770
  5. LG CHEM KR 19,835
  6. TOKYO ELECTRON JP 18,519
  7. ROBERT BOSCH DE 14,595
  8. INTEL CORPORATION US 13,580
  9. MURATA MANUFACTURING COMPANY JP 12,151
  10. SAMSUNG SDI COMPANY KR 12,080