1492144-A2 is referenced by 1 patents and cites 5 patents.

An electron emissive composition comprises a barium tantalate composition of the formula (Ba 1-x , Ca x , Sr p , D q ) 6 (Ta 1-y , W y , E t , F u , G v , Ca w ) 2 O (11 +- ') where ' is an amount of about 0 to about -3; and wherein D is either an alkali earth metal ion or an alkaline earth ion; E, F, and G, are alkaline earth ions and/or transition metal ion; x is an amount of up to about 0.7; y is an amount of up to about 1; p and q are amounts of up to about 0.3; and t is an amount of about 0.05 to about 0.10, u is an amount of up to about 0.5, v is an amount of up to about 0.5 and w is an amount of up to about 0.25. A method for manufacturing an electron emissive composition comprises blending a barium tantalate composition with a binder; and sintering the barium tantalate composition with the binder at a temperature of about 1000 DEG C to about 1700 DEG C.

Title
Electron emissive materials for electric lamps and methods of manufacture thereof
Application Number
EP20040253123 20040527
Publication Number
1492144 (A2)
Application Date
May 27, 2004
Publication Date
December 29, 2004
Inventor
Adyam Mukunda Srinivas
IN
Ramachandran Gopi Chandran
IN
Beers William Winder
US
Midha Vikas
US
Comanzo Holly Ann
US
Srivastava Alok M
US
Venugopal Shankar Madras
IN
Assignee
Gen Electric
US
IPC
H01J 61/06
H01J 09/04
H01J 01/14
H01J 61/067
H01J 61/06
H01J 61/04
H01J 09/04
H01J 01/13
H01J 01/02
H01J 01/00
C01G 01/02
C01G 35/00
H01J 61/073
H01J 61/067
H01J 61/06
H01J 61/04
H01J 09/04
H01J 01/48
H01J 01/38
H01J 01/146
H01J 01/14
H01J 01/00
C01G 01/02
C01G 35/00
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