IPC Subgroup
H01J 29/02 Electrodes; Screens; Mounting, supporting, spacing, or insulating thereof
Introduced: September 1968
Last revised: January 2006
Full Title
Details of cathode-ray tubes or of electron-beam tubes of the types covered by group > Electrodes; Screens; Mounting, supporting, spacing, or insulating thereof
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
4 direct subcodes
Child Classifications
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- H01J 29/04 Cathodes
- H01J 29/06 Screens for shielding; Masks interposed in the electron stream
- H01J 29/08 Electrodes intimately associated with a screen on or from which an image or pattern is formed, picked-up, converted or stored, e.g. backing-plates for storage tubes or electrodes for collecting secondary electrons
- H01J 29/1 Screens on, or from, which an image or pattern is formed, picked-up, converted, or stored
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