US PATENT SUBCLASS 428 / 501
.~.~ Next to an aldehyde or ketone condensation product

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

411.1  DF  COMPOSITE (NONSTRUCTURAL LAMINATE) {25}
500  DF  .~ Of addition polymer from unsaturated monomers {6}
501.~.~ Next to an aldehyde or ketone condensation product {3}
502  DF  .~.~.~> Melamine-aldehyde {1}
504  DF  .~.~.~> Amide-aldehyde {1}
506  DF  .~.~.~> Phenol-aldehyde

DEFINITION

Classification: 428/501

(under subclass 500) Product in which a layer adjacent to the layers of addition polymer from unsaturated monomers, comprises an (aldehyde or ketone condensation product*).

(1) Note. An acetal of polyvinyl alcohol is an (aldehyde or ketone condensation product); hence, a patent claiming a product of such an acetal next to another layer which comprises an addition polymer from unsaturated monomers will be placed in this subclass.