US PATENT SUBCLASS 501 / 6
.~.~.~ Alkali metal aluminosilicate crystalline phase

Current as of: June, 1999
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501 /   HD   COMPOSITIONS: CERAMIC

1  DF  CERAMIC COMPOSITIONS {15}
2  DF  .~ Devitrified glass-ceramics {4}
5  DF  .~.~ Binary, ternary, quaternary, etc., metal silicate crystalline phase (e.g., mullite, diopside, sphene, plagioclase, slagcerams free of alumina, etc.) {2}
6.~.~.~ Alkali metal aluminosilicate crystalline phase {1}
7  DF  .~.~.~.~> Lithium aluminosilicate (e.g., spodumeme, eucryptite, petalite, etc.)

DEFINITION

Classification: 501/6

Alkali metal aluminosilicate crystalline phase:

(under subclass 5) Compositions in which the silicate comprises an alkali metal aluminosilicate.