IPC Subgroup
H01J 17/02 Details
Introduced: September 1968
Last revised: January 2006
Full Title
Gas-filled discharge tubes with solid cathodes > Details
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
10 direct subcodes
Child Classifications
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- H01J 17/04 Electrodes; Screens
- H01J 17/14 Magnetic means for controlling the discharge
- H01J 17/16 Vessels; Containers
- H01J 17/18 Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
- H01J 17/2 Selection of substances for gas fillings; Specified operating pressures or temperatures
- H01J 17/22 Means for obtaining or maintaining the desired pressure within the tube
- H01J 17/28 Cooling arrangements
- H01J 17/3 Igniting arrangements
- H01J 17/34 One or more circuit elements structurally associated with the tube
- H01J 17/36 Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
Top Applicants
Top 10 applicants by patent filingsfor 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