US PATENT SUBCLASS 428 / 320.2
.~ Composite having a component wherein a constituent is liquid or is contained within preformed walls (e.g., impregnant-filled, previously void containing component, etc.)

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

221  DF  WEB OR SHEET CONTAINING STRUCTURALLY DEFINED ELEMENT OR COMPONENT {9}
320.2.~ Composite having a component wherein a constituent is liquid or is contained within preformed walls (e.g., impregnant-filled, previously void containing component, etc.) {3}
321.1  DF  .~.~> Constituent is in liquid form {2}
322.2  DF  .~.~> Indefinite plurality of similar impregnated thin sheets (e.g., "decorative laminate" type, etc.)
322.7  DF  .~.~> Differentially filled foam, filled plural layers, or filled layer with coat of filling material

DEFINITION

Classification: 428/320.2

Composite having a component wherein a constituent is liquid or is contained within performed walls (e.g., impregnant-filled, previously void-containing component, etc.):

(under subclass 221) Subject matter consisting of at least

two components, at least one of which contains liquid or has a constituent trapped inside walls made before combination with the other constituent.

SEE OR SEARCH THIS CLASS, SUBCLASS:

408, for an impregnated, self-sustaining, carbon mass.

439.5, for a consolidated metal powder product impregnated with a nonmetal.

540+, for an impregnated natural product.