CPC Subgroup
H01J 1/02 Main electrodes
Full Title
Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps (details of electron-optical or ion-optical arrangements H01J3/00) > Main electrodes
9 direct subcodes
Child Classifications
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- H01J 1/04 Liquid electrodes, e.g. liquid cathode
- H01J 1/12 Cathodes having mercury or liquid alkali metal deposited on the cathode surface during operation of the tube
- H01J 1/13 Solid thermionic cathodes
- H01J 1/30 Cold cathodes, e.g. field-emissive cathode
- H01J 1/32 Secondary-electron-emitting electrodes (H01J1/35 takes precedence)
- H01J 1/34 Photo-emissive cathodes (H01J1/35 takes precedence)
- H01J 1/35 Electrodes exhibiting both secondary emission and photo-emission
- H01J 1/36 Solid anodes; Solid auxiliary anodes for maintaining a discharge