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CPC Subgroup
H01J 23/24

Slow-wave structures

Full Title

Details of transit-time tubes of the types covered by group H01J25/00 > Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge > Slow-wave structures

3 direct subcodes

Child Classifications

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  • H01J 23/28 Interdigital slow-wave structures; Adjustment therefor
  • H01J 23/30 Damping arrangements associated with slow-wave structures, e.g. for suppression of unwanted oscillations

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