US PATENT SUBCLASS 428 / 327
.~.~ Polymeric or resinous material

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}
323  DF  .~ Including a second component containing structurally defined particles {7}
327.~.~ Polymeric or resinous material

DEFINITION

Classification: 428/327

(under subclass 323) Product in which the particles comprise an organic substance which is synthetically produced by union (polymerization or condensation) of a large number of molecules of one or more relatively simple compounds.

(1) Note. Particles of naturally occurring polymeric material or reaction products thereof, e.g., carbohydrate, polypeptides and cellulosic products, are excluded from this

definition of polymer and will be found in other subclasses on other features, e.g., subclass 326 for carbohydrates, etc.