US PATENT SUBCLASS 428 / 395
.~.~.~.~.~ Polyamide, polyimide or polyester

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

357  DF  COATED OR STRUCTUALLY DEFINED FLAKE, PARTICLE, CELL, STRAND, STRAND PORTION, ROD, FILAMENT, MACROSCOPIC FIBER OR MASS THEREOF {5}
364  DF  .~ Rod, strand, filament or fiber {9}
375  DF  .~.~ Coated or with bond, impregnation or core {7}
392  DF  .~.~.~ Artificial fiber or filament {2}
394  DF  .~.~.~.~ Synthetic resin or polymer {1}
395.~.~.~.~.~ Polyamide, polyimide or polyester

DEFINITION

Classification: 428/395

(under subclass 394) Product in which the resin or polymer comprises (1) a polymeric compound containing amide groups through which the monomers are linearly linked and includes the reaction products of polyamines and polybasic acids or the polymer of amino acids (e.g., nylon, peptides and protein) or (2) a polymeric compound containing ester groups through which the monomers are linearly linked to one another.

(1) Note. Urea-aldehyde is not considered to be a polyamide or polyimide for purposes of classification in this schedule and will be found in the subclass providing for condensation products of aldehyde and ketone.

SEE OR SEARCH THIS CLASS, SUBCLASS:

327, for a product comprising a composite web or sheet including a second component which contains structurally defined particles of polymetic or resinous material which may be polyamide or polyester particles.

430+, 435, 458, 473.5, 474.4, and 480+, for a nonstructural laminate in which one layer includes polyamide, polyimide or polyester.