C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
31/130, 313/81
C09K 11/73 (2006.01) C09K 11/77 (2006.01) H01J 61/44 (2006.01)
Patent
CA 1193087
Abstract of the Disclosure Yellow emitting fluorescent lamp phosphor compositions comprise cerium and manganese activated alkali-earth fluoroapatite compositions containing sodium having the approximate formula Image wherein s is from 0 to l t is from about 3.43 to about 4.01 v is about 0.3 w is about 0.3 x is from about 0.3 to about 0.4 y is about 3.00 z is from about 1.0 to about 4Ø An improved two step firing process for producing the disclosed phosphors is described and an improved fluor- escent lamp employing the disclosed phosphors is also described.
424579
Pappalardo Romano G.
Peters Thomas E.
Gte Laboratories Incorporated
R. William Wray & Associates
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