US PATENT SUBCLASS 428 / 471
.~.~.~ Alkali or alkaline earth metal oxide

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

411.1  DF  COMPOSITE (NONSTRUCTURAL LAMINATE) {25}
457  DF  .~ Of metal {8}
469  DF  .~.~ Next to metal salt or oxide {5}
471.~.~.~ Alkali or alkaline earth metal oxide

DEFINITION

Classification: 428/471

(under subclass 469) Product in which the contiguous layer comprises the compound formed by the combination of oxygen with a metal from Groups I A or II A of the periodic system (i.e., Lithium, Sodium, Potassium, Rubidium, Cesium, Magnesium, Calcium, Strontium and Barium).