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IPC Subgroup
H01J 5/22

Vacuum-tight joints between parts of vessel

Introduced: September 1968

Last revised: January 2006

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

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC ELEMENTS
Subclass:
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

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 5/3 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. TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 43,574
  2. SAMSUNG ELECTRONICS COMPANY KR 42,206
  3. LG CHEM KR 21,383
  4. APPLIED MATERIALS US 20,441
  5. LG ENERGY SOLUTION KR 20,279
  6. SAMSUNG DISPLAY KR 19,725
  7. CHINESE ACADEMY OF SCIENCES 19,400
  8. TOYOTA MOTOR CORPORATION 18,819
  9. SGCC(STATE GRID CORPORATION OF CHINA) 18,082
  10. TOKYO ELECTRON JP 17,634