US PATENT SUBCLASS 442 / 176
.~.~ Coating or impregnation contains aldehyde or ketone condensation product

Current as of: June, 1999
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442 /   HD   FABRIC (WOVEN, KNITTED, OR NONWOVEN TEXTILE OR CLOTH, ETC.)

59  DF  COATED OR IMPREGNATED WOVEN, KNIT, OR NONWOVEN FABRIC WHICH IS NOT (A) ASSOCIATED WITH ANOTHER PREFORMED LAYER OR FIBER LAYER OR, (B) WITH RESPECT TO WOVEN AND KNIT, CHARACTERIZED, RESPECTIVELY, BY A PARTICULAR OR DIFFERENTIAL WEAVE OR KNIT, WHEREIN THE COATING OR IMPREGNATION IS NEITHER A FOAMED MATERIAL NOR A FREE METAL OR ALLOY LAYER {36}
172  DF  .~ Coated or impregnated inorganic fiber fabric {6}
176.~.~ Coating or impregnation contains aldehyde or ketone condensation product {1}
177  DF  .~.~.~> Amide-aldehyde condensate

DEFINITION

Classification: 442/176

Coating or impregnation contains aldehyde or ketone condensation product:

(under subclass 172) Subject matter wherein the coating or impregnation comprises a product resulting from the condensation of an aldehyde or a ketone.