US PATENT SUBCLASS 442 / 77
.~.~ Coating or impregnation is specified as microporous but is not a foam


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}
76  DF  .~ Coating or impregnation specified as porous or permeable to a specific substance (e.g., water vapor, air, etc.) {1}
77.~.~ Coating or impregnation is specified as microporous but is not a foam


DEFINITION

Classification: 442/77

Coating or impregnation is specified as microporous but is not a foam:

(under subclass 76) Subject matter wherein the coating or impregnation is not a foam but is microporous, the porosity being specifically stated.