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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 13/20 Control electrodes, e.g. grid (for igniting arrangements H01J13/34)
  • H01J 13/22 Screens, e.g. for preventing or eliminating arcing-back
  • H01J 13/32 Cooling arrangements; Heating arrangements (for cathodes H01J13/14; for anodes H01J13/18)
  • 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

  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