US PATENT SUBCLASS 428 / 639
.~.~ O, S, or organic compound in metal component

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

544  DF  ALL METAL OR WITH ADJACENT METALS {31}
615  DF  .~ Composite; i.e., plural, adjacent, spatially distinct metal components (e.g., layers, joint, etc.) {15}
639.~.~ O, S, or organic compound in metal component {1}
640  DF  .~.~.~> Oxide of transition metal or Al

DEFINITION

Classification: 428/639

(under subclass 615) Subject matter in which a component of a composite has oxygen, sulfur, or an organic material dispersed in its metal matrix.

SEE OR SEARCH THIS CLASS, SUBCLASS:

539.5, for stock-material* comprising a metal matrix interengaged with a nonmetal matrix.

545, for composite materials having as a component a metal matrix interengaged with a nonmetal matrix.

567, for a composite having a particulate component with nonmetal dispersed therein.

SEE OR SEARCH CLASS 75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures,

230, and 951 for consolidated metal powder compositions having a nonmetal dispersed therein.