US PATENT SUBCLASS 428 / 524
.~ Of 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}
524.~ Of aldehyde or ketone condensation product {2}
525  DF  .~.~> Next to second aldehyde or ketone condensation product
526  DF  .~.~> Next to cellulosic {3}

DEFINITION

Classification: 428/524

(under subclass 411.1) Product in which at least one layer comprises a resin resulting from the reaction of an aldehyde or a ketone and a polyfunctional active hydrogen containing compound, which, with the elimination of water, produces a chain of alkylidene units alternating with the residue of the hydrogen supplying compound.

(1) Note. Phenol formaldehyde, urea formaldehyde, polyamino (e.g., melamine) formaldehyde, and furfural are exemplary of compounds within the scope of the term, "Aldehyde or ketone condensation product*.

SEE OR SEARCH THIS CLASS, SUBCLASS:

26, for an article* resembling a flower or flower petal made of an aldehyde or ketone condensation product.

355+, for a product including an adhesive outer layer in which the adhesive may contain an aldehyde or ketone condensation product in its composition.

436+, 451, 460, and 494, for an aldehyde or ketone condensation product as a coating or layer of a composite* web* or sheet*. 501+, for an (addition polymer from unsaturated monomers*) next to an aldehyde or ketone condensation product.

442, Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, etc.), subclasses 160+ and 176+ for a coated or impregnated fabric that includes an aldehyde or ketone condensation product.