IPC Subgroup
H01J 29/1 Screens on, or from, which an image or pattern is formed, picked-up, converted, or stored
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 > Screens on, or from, which an image or pattern is formed, picked-up, converted, or stored
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
5 direct subcodes
Child Classifications
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- H01J 29/12 acting as light valves by shutter operation, e.g. for eidophor
- H01J 29/14 acting by discolouration, e.g. halide screen
- H01J 29/16 Incandescent screens
- H01J 29/18 Luminescent screens
- H01J 29/36 Photoelectric screens; Charge-storage screens
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