US PATENT SUBCLASS 423 / 518
.~.~ Plural metal containing
Current as of:
June, 1999
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423 /
HD
CHEMISTRY OF INORGANIC COMPOUNDS
511
DF
SULFUR OR COMPOUND THEREOF
{4}
512.1
DF
.~ Oxygen containing {11}
518
.~.~ Plural metal containing
DEFINITION
Classification: 423/518
(under subclass 512.1) Products or processes, wherein the compound contains two or more different metals in addition to sulfur and oxygen.
(1) Note. Examples of the compounds included in this subclass are K
2
SO
4
A1
2
(SO
4
)
3
24 H
2
O, Na
2
A1
2
(SO
4
)
4
, and PbS BaO.
(2) Note. Many of the plural metal containing compounds are known as alums, see (2) Note in subclass 517 for description of these compounds.
SEE OR SEARCH THIS CLASS, SUBCLASS:
117, for processes of treating mixtures to obtain a plural metal compound containing both oxygen and sulfur.
