US PATENT SUBCLASS 106 / 456
.~.~.~ Iron compound containing (Fe)

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

*  DD  MATERIALS OR INGREDIENTS {7}
400  DF  .~ Pigment, filler, or aggregate compositions, e.g., stone, shale, pebbles, rock, etc. {1}
401  DF  .~.~ Composition contains identified material other than water {25}
456.~.~.~ Iron compound containing (Fe) {4}
457  DF  .~.~.~.~> Silicon containing, e.g., slag, turkey umber, Fullers earth, etc.
458  DF  .~.~.~.~> Compound containing carbon triple bonded to nitrogen, e.g., prussian blue, iron blue, etc.
459  DF  .~.~.~.~> With other metal compound
460  DF  .~.~.~.~> Organic material containing

DEFINITION

Classification: 106/456

Iron compound containing:

(under subclass 401) Subject matter wherein the composition contains an iron compound.

(1) Note. Clay is not sufficient to place in this subclass, unless iron is positively indicated.

SEE OR SEARCH CLASS

423, Chemistry of Inorganic Compounds, appropriate subclasses for iron compounds, per se.