characterised by the material

Introduced: September 1968

Last revised: January 2006

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 > Main electrodes > Solid thermionic cathodes > characterised by the material

Classification Context

Section:: ELECTRICITY
Class:: ELECTRIC ELEMENTS
Subclass:: ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

4 direct subcodes

Child Classifications

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H01J 1/142 with alkaline-earth metal oxides, or such oxides used in conjunction with reducing agents, as an emissive material
H01J 1/144 with other metal oxides as an emissive material
H01J 1/146 with metals or alloys as an emissive material
H01J 1/148 with compounds having metallic conductive properties, e.g. lanthanum boride, as an emissive material