H01H 33/91 the arc-extinguishing fluid being air or gas
Introduced: September 1968
Full Title
Full titles differ between systems:
High-tension or heavy-current switches with arc-extinguishing or arc-preventing means > Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid > the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts > this movement being effected by, or in conjunction with, the contact-operating mechanism > the arc-extinguishing fluid being air or gas
High-tension or heavy-current switches with arc-extinguishing or arc-preventing means > Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid > the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts > this movement being effected by or in conjunction with the contact-operating mechanism > the arc-extinguishing fluid being air or gas
Of 2 combined children, 0 exist in both systems.
1 codes are CPC-only extensions, 1 exist only in IPC.
Note: 1 CPC extensions are marked as secondary classification only.
IPC defines codes here since 1980.
Child Classifications
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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