DIFF Subgroup
H01J 17/02 Details
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Gas-filled discharge tubes with solid cathodes > Details
CPC:
Gas-filled discharge tubes with solid cathode (H01J25/00, H01J27/00, H01J31/00 - H01J41/00 take precedence; gas filled spark gaps H01T; Marx converters H02M7/26) > Details
IPC and CPC are identically structured here. All 10 subcodes exist in both systems.
Child Classifications
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- H01J 17/18 Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors +2 CPC IPC+CPC Available in IPC and CPC
- H01J 17/20 Selection of substances for gas fillings; Specified operating pressures or temperatures IPC+CPC Available in IPC and CPC
- H01J 17/22 Means for obtaining or maintaining the desired pressure within the tube IPC+CPC Available in IPC and CPC
- H01J 17/34 One or more circuit elements structurally associated with the tube IPC+CPC Available in IPC and CPC
- H01J 17/36 Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class H01,2013–2023, worldwide · Source: EPO PATSTAT
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 43,574
- SAMSUNG ELECTRONICS COMPANY KR 42,206
- LG CHEM KR 21,383
- APPLIED MATERIALS US 20,441
- LG ENERGY SOLUTION KR 20,279
- SAMSUNG DISPLAY KR 19,725
- CHINESE ACADEMY OF SCIENCES 19,400
- TOYOTA MOTOR CORPORATION 18,819
- SGCC(STATE GRID CORPORATION OF CHINA) 18,082
- TOKYO ELECTRON JP 17,634
Top Applicants (CPC)
Class H01,2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG ELECTRONICS COMPANY KR 37,897
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 36,116
- APPLIED MATERIALS US 21,640
- LG ENERGY SOLUTION KR 20,770
- LG CHEM KR 19,835
- TOKYO ELECTRON JP 18,519
- ROBERT BOSCH DE 14,595
- INTEL CORPORATION US 13,580
- MURATA MANUFACTURING COMPANY JP 12,151
- SAMSUNG SDI COMPANY KR 12,080