Emissive coating for electrodes

Details Emissive coating for electrodes Emissive coating for electrodes

1975-12-15

1977-06-21

Esposito, Michael F.

Electric lamp and discharge devices

Electrode and shield structures

Cathodes containing and/or coated with electron emissive...

313337, 428371, 428389, 427 77, 427116, H01J 114, D02G 300

Patent

active

040314260

ABSTRACT:
An electron emissive coating for long life fluorescent lamps comprises a composition of barium tantalate having the formula M(BaO) . N(Ta.sub.2 O.sub.5) where the ratio M/N is greater than 1.

REFERENCES:
patent: 2724070 (1955-11-01), Heine
patent: 2985548 (1961-05-01), Blickwedel
patent: 3718831 (1973-02-01), Butter et al.
patent: 3755553 (1973-08-01), Kutolin
patent: 3758809 (1973-09-01), Menelly et al.
patent: 3766423 (1973-10-01), Menelly
patent: 3798492 (1974-03-01), Menelly
patent: 3837909 (1974-09-01), Menelly
patent: 3842469 (1974-10-01), Menelly

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