US PATENT SUBCLASS 501 / 5
.~.~ Binary, ternary, quaternary, etc., metal silicate crystalline phase (e.g., mullite, diopside, sphene, plagioclase, slagcerams free of alumina, etc.)

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.~.~ Binary, ternary, quaternary, etc., metal silicate crystalline phase (e.g., mullite, diopside, sphene, plagioclase, slagcerams free of alumina, etc.) {2}
6  DF  .~.~.~> Alkali metal aluminosilicate crystalline phase {1}
8  DF  .~.~.~> Divalent metal oxide aluminosilicate crystalline phase (e.g., anorthite, slagcerams, etc.) {1}

DEFINITION

Classification: 501/5

Binary, ternary, quaternary, etc., metal silicate crystalline phase (e.g., mullite, diopside, sphene, plagioclase, slagcerams free of alumina, etc.):

(under subclass 2) Subject matter wherein the crystalline phase comprises silicates of two or more metals.

(1) Note. The crystalline phase may comprise, e.g., diopside (CaMgSiO6), sphene

(CaTiSiO5), plagioclase (atriclinic feldspar), a slagceram free of Al2 [end subscrpt]O3, etc.