US PATENT SUBCLASS 428 / 306.6
.~.~ Void-containing component partially impregnated with adjacent component

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}
304.4  DF  .~ Composite having voids in a component (e.g., porous, cellular, etc.) {14}
306.6.~.~ Void-containing component partially impregnated with adjacent component {3}
307.3  DF  .~.~.~> Void-containing component is inorganic {1}
308.4  DF  .~.~.~> Void-containing component is synthetic resin or natural rubbers
308.8  DF  .~.~.~> Void-containing component is wood or paper

DEFINITION

Classification: 428/306.6

Void-containing component partially impregnated with adjacent component:

(under subclass 304.4) Subject matter wherein a void-containing component is partially impregnated with the material which constitutes an adjacent component of the composite.

(1) Note. The impregnating material may itself be void-containing, e.g., a foam, etc.

(2) Note. Ordinarily the void-containing component is in a solid, self-sustaining form during the impregnation, while the impregnant is in a fluent form.

SEE OR SEARCH THIS CLASS, SUBCLASS:

309.9, for a product made by commingling some material of two adjacent foam layers, usually in fluent or uncured form, to make an intermediate layer.