CPC Subgroup
H01J 13/02 Details
Full Title
Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes > Details
11 direct subcodes
Child Classifications
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- H01J 13/04 Main electrodes; Auxiliary anodes
- H01J 13/20 Control electrodes, e.g. grid (for igniting arrangements H01J13/34)
- H01J 13/22 Screens, e.g. for preventing or eliminating arcing-back
- H01J 13/24 Vessels; Containers
- H01J 13/26 Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
- H01J 13/28 Selection of substances for gas filling; Means for obtaining the desired pressure within the tube
- H01J 13/32 Cooling arrangements; Heating arrangements (for cathodes H01J13/14; for anodes H01J13/18)
- H01J 13/34 Igniting arrangements
- H01J 13/44 Devices for preventing or eliminating arcing-back
- H01J 13/46 One or more circuit elements structurally associated with the tube
- H01J 13/48 Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
Top Applicants
Top 10 applicants by patent filingsfor 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