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CPC Subgroup
H01J 5/22

Vacuum-tight joints between parts of vessel

Full Title

Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps > Seals between parts of vessels > Vacuum-tight joints between parts of vessel

4 direct subcodes

Child Classifications

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  • H01J 5/24 between insulating parts of vessel
  • H01J 5/26 between insulating and conductive parts of vessel
  • H01J 5/28 between conductive parts of vessel
  • H01J 5/30 using packing-material, e.g. sealing-liquid or elastic insert

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