IPC Subgroup
H01J 27/02 Ion sources; Ion guns
Introduced: January 1980
Last revised: January 2006
Full Title
Ion beam tubes > Ion sources; Ion guns
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
6 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- H01J 27/04 using reflex discharge, e.g. Penning ion sources
- H01J 27/08 using arc discharge
- H01J 27/16 using high-frequency excitation, e.g. microwave excitation
- H01J 27/2 using particle bombardment, e.g. ionisers
- H01J 27/24 using photo-ionisation, e.g. using laser beam
- H01J 27/26 using surface ionisation, e.g. field effect ion sources, thermionic ion sources
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