IPC Main Group
H01J 7/00 Details not provided for in groups and common to two or more basic types of discharge tubes or lamps
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
6 direct subcodes
Child Classifications
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- H01J 7/02 Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J 7/14 Means for obtaining or maintaining the desired pressure within the vessel
- H01J 7/24 Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
- H01J 7/3 Igniting arrangements
- H01J 7/42 Means structurally associated with the tube or lamp for indicating defects or previous use
- H01J 7/44 One or more circuit elements structurally associated with the tube or lamp
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