US PATENT SUBCLASS 428 / 221
WEB OR SHEET CONTAINING STRUCTURALLY DEFINED ELEMENT OR COMPONENT

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

221WEB OR SHEET CONTAINING STRUCTURALLY DEFINED ELEMENT OR COMPONENT {9}
222  DF  .~> Embodying intertwined or helical component(s)
223  DF  .~> Including interlaminar mechanical fastener
292.1  DF  .~> Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity {7}
304.4  DF  .~> Composite having voids in a component (e.g., porous, cellular, etc.) {14}
320.2  DF  .~> 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}
323  DF  .~> Including a second component containing structurally defined particles {7}
332  DF  .~> Physical dimension specified {5}
340  DF  .~> Weight per unit area specified (e.g., gms/sq cm, lbs/sq ft, etc.) {1}
343  DF  .~> Adhesive outermost layer {8}

DEFINITION

Classification: 428/221

(under the class definition) Product comprising a single or plural layer* web*, or sheet* which contains a component* or an element* (e.g., fiber*, strand*, filament*, particle*, etc.), the size or some structural feature of which is claimed, (e.g., orientation or relation to another element or component, bond at intersecting points, weave or knit, cellularity or porosity, etc.).

(1) Note. For purposes of this group of subclasses, a disclosed fabric, textile or cloth will be considered to be included under "structurally defined element or component".

SEE OR SEARCH THIS CLASS, SUBCLASS:

98+, for a web or sheet (single or plural layer) in which the web (1) has a particular overall shape, significant size or other particular configuration such as an edge feature or (2) the components are arranged in an orderly fashion relative to a surface of the product or (3) the product comprises plural layers with each layer thereof claimed as possessing a particular characteristic such as density or hardness or thickness or (4) the product includes a particular characteristic claimed in its relation to a surface or edge thereof, all to an end that the overall web or sheet may be identified as having a particular structure.

360, for a mass (not a sheet or web) of staple length fibers bonded at their intersections only.