H - Electricity – 01 – J
Patent
H - Electricity
01
J
31/128, 313/81
H01J 61/04 (2006.01) C09K 11/77 (2006.01) H01J 61/60 (2006.01)
Patent
CA 1039048
ABSTRACT OF THE DISCLOSURE: A luminescent beryllium-containing phosphate activated by bivalent europium defined by the formula Mea-xBebEuxP2O8 where a + b = 3 and 0.01 ? x ? 0.25 and b has the value 1 or 2. If b = 2, Me mainly represents one of the alkaline earth metals barium, strontium and calcium. If b = 1, Me mainly represents barium and/or strontium. The luminescent phosphate may be used in mercury vapour discharge lamps and in low-pressure cadmium vapour discharge lamps.
201285
de Meester Emiel P.j.
Van de Spijker Willebrordus H.m.m.
Verstegen Judicus M.p.j.
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