US PATENT SUBCLASS 428 / 453
.~.~.~ Sodium silicate

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

411.1  DF  COMPOSITE (NONSTRUCTURAL LAMINATE) {25}
446  DF  .~ Of silicon containing (not as silicon alloy) {6}
452  DF  .~.~ Next to cellulosic {1}
453.~.~.~ Sodium silicate

DEFINITION

Classification: 428/453

(under subclass 452) Product in which the silicon-containing layer comprises sodium silicate.

SEE OR SEARCH THIS CLASS, SUBCLASS:

448+, for a composite product in which sodium silicate may be the intermediate layer and especially subclass 449 in which sodium silicate, as the intermediate layer is the adhesive between two paper layers.