US PATENT SUBCLASS 428 / 688
.~ Of inorganic material

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

411.1  DF  COMPOSITE (NONSTRUCTURAL LAMINATE) {25}
688.~ Of inorganic material {1}
689  DF  .~.~> Metal-compound-containing layer {7}

DEFINITION

Classification: 428/688

Of inorganic material:

(under subclass 411.1) Subject matter in which at least one layer is comprised of inorganic material(s).

(1) Note. Organo-metallic compounds are not considered inorganic compounds and are not a basis for classification in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

432+, for a laminate having a quartz or glass layer.

466+, for a silicon-containing layer other than glass or quartz.

469+, for a laminate of a free metal or alloy next to a metal salt or oxide.

SEE OR SEARCH CLASS

423, Chemistry of Inorganic Compounds, appropriate subclasses for an inorganic compound, per se.