US PATENT SUBCLASS 428 / 158
.~.~ Foamed or cellular component

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

98  DF  STRUCTURALLY DEFINED WEB OR SHEET (E.G., OVERALL DIMENSION, ETC.) {20}
156  DF  .~ Including variation in thickness {7}
158.~.~ Foamed or cellular component {1}
159  DF  .~.~.~> Component comprises a polymer (e.g., rubber, etc.) {1}

DEFINITION

Classification: 428/158

(under subclass 156) Product including a component which contains (1) open or interconnected voids throughout which have been made by means of a gas or other agent (blowing agent or heat, etc.) enlarging the voids or the material of the component so as to occupy more space or (2) closed cavities (empty or filled).