US PATENT SUBCLASS 106 / 692
.~.~ Aluminous cement (e.g., high alumina, calcium aluminate, etc.)

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
638  DF  .~ Inorganic settable ingredient containing {30}
692.~.~ Aluminous cement (e.g., high alumina, calcium aluminate, etc.) {4}
693  DF  .~.~.~> Cement clinker preparation
694  DF  .~.~.~> Soil, diatomaceous earth, clay, shale, slate, or rock-type material containing or material for treating soil or earth (e.g., soil stabilization, etc.)
695  DF  .~.~.~> With other cement material (e.g., Portland, calcium sulfate, etc.)
696  DF  .~.~.~> Organic material containing

DEFINITION

Classification: 106/692

Aluminous cement (e.g., high alumina, calcium aluminate, etc.):

(under subclass 638) Subject matter involving compositions which are cements of the high alumina type or calcium aluminate.

(1) Note. Commonly, high alumina or calcium aluminate cements are those containing a large proportion of aluminium oxide, together with lime, and smaller amounts of iron oxide and silica, and are formed by fusion of the raw materials. The ordinary high alumina cement contains approximately forty per cent alumina.

SEE OR SEARCH CLASS

423, Chemistry of Inorganic Compounds,

600, for calcium aluminate, per se.