H - Electricity – 01 – J
Patent
H - Electricity
01
J
316/13, 313/35.1
H01J 9/20 (2006.01) H01J 29/88 (2006.01)
Patent
CA 1215423
ABSTRACT "Electric discharge tube and method of manufacturing an electrically conductive layer on a wall portion of the envelope of such a tube". An electrically conductive layer on a wall portion of the envelope of an electric discharge tube which comprises an electrically conductive material and at least 5% by weight of silicon dioxide as an adhesive, adheres readily, is hard and can be washed with water. Such a layer can be obtained from a suspension comprising an electrically conductive material and a binder in a solvent, in which the binder is a quarternary ammonium silicate or a solution of silicon dioxide (SiO2) in phosphoric acid (H3PO4), in which the mol ratio SiO2/P2O5 is between 0.3:1 and 20:1.
449093
Compen Johannes M.a.a.
Van Kemenade Wilhelmus M.p.
N.v.philips'gloeilampenfabrieken
Van Steinburg C.e.
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