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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H01J 7/02

Selection of substances for gas fillings; Specified operating pressure or temperature

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Details not provided for in groups and common to two or more basic types of discharge tubes or lamps > Selection of substances for gas fillings; Specified operating pressure or temperature

CPC:

Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps > Selection of substances for gas fillings; Specified operating pressure or temperature

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

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  • H01J 7/04 having one or more carbon compounds as the principal constituent IPC+CPC Available in IPC and CPC
  • H01J 7/06 having helium, argon, neon, krypton, or xenon as the principal constituent IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

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