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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H01J 40/02

Details

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Photoelectric discharge tubes not involving the ionisation of a gas > Details

CPC:

Photoelectric discharge tubes not involving the ionisation of a gas (H01J49/00 takes precedence) > Details

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

IPC defines codes here since 1980.

Child Classifications

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  • H01J 40/08 Magnetic means for controlling discharge since 1980 IPC+CPC Available in IPC and CPC
  • H01J 40/10 Selection of substances for gas fillings since 1980 IPC+CPC Available in IPC and CPC
  • H01J 40/12 One or more circuit elements structurally associated with the tube since 1980 IPC+CPC Available in IPC and CPC
  • H01J 40/14 Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for since 1980 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