H01F 1/053 containing rare earth metals
Introduced: January 1990
Full Title
Full titles differ between systems:
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 hard-magnetic materials > metals or alloys > Alloys characterised by their composition > containing rare earth metals
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 hard-magnetic materials > metals or alloys > Alloys characterised by their composition > containing rare earth metals
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1995.
Child Classifications
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- H01F 1/055 and magnetic transition metals, e.g. SmCo5 since 1995 +3 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class H01,2013–2023, worldwide · Source: EPO PATSTAT
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 43,574
- SAMSUNG ELECTRONICS COMPANY KR 42,206
- LG CHEM KR 21,383
- APPLIED MATERIALS US 20,441
- LG ENERGY SOLUTION KR 20,279
- SAMSUNG DISPLAY KR 19,725
- CHINESE ACADEMY OF SCIENCES 19,400
- TOYOTA MOTOR CORPORATION 18,819
- SGCC(STATE GRID CORPORATION OF CHINA) 18,082
- TOKYO ELECTRON JP 17,634
Top Applicants (CPC)
Class H01,2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG ELECTRONICS COMPANY KR 37,897
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 36,116
- APPLIED MATERIALS US 21,640
- LG ENERGY SOLUTION KR 20,770
- LG CHEM KR 19,835
- TOKYO ELECTRON JP 18,519
- ROBERT BOSCH DE 14,595
- INTEL CORPORATION US 13,580
- MURATA MANUFACTURING COMPANY JP 12,151
- SAMSUNG SDI COMPANY KR 12,080