US PATENT SUBCLASS 106 / 693
.~.~.~ Cement clinker preparation

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  DF  .~.~ Aluminous cement (e.g., high alumina, calcium aluminate, etc.) {4}
693.~.~.~ Cement clinker preparation

DEFINITION

Classification: 106/693

Cement clinker preparation:

(under subclass 692) Subject matter involving the preparation of aluminous cement clinker.