US PATENT SUBCLASS 442 / 404
.~.~.~ Containing inorganic and polymeric strand or fiber materials

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

327  DF  NONWOVEN FABRIC (I.E., NONWOVEN STRAND OR FIBER MATERIAL) {20}
402  DF  .~ Needled nonwoven fabric {1}
403  DF  .~.~ Containing at least two chemically different strand or fiber materials {4}
404.~.~.~ Containing inorganic and polymeric strand or fiber materials

DEFINITION

Classification: 442/404

Containing inorganic and polymeric strand or fiber materials:

(under subclass 403) Subject matter wherein the nonwoven fabric comprises at least one inorganic and at least one polymeric strand or fiber material mechanically interengaged by needling.