Dialysis filter housings comprising polyester compositions...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof

Reexamination Certificate

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C528S302000, C528S304000, C528S305000, C525S165000, C525S173000, C525S177000, C525S390000, C525S397000, C525S425000, C525S439000, C525S444000

Reexamination Certificate

active

07951900

ABSTRACT:
Described are dialysis filter housings comprising polyester compositions comprising polyesters which comprise (a) a dicarboxylic acid component having terephthalic acid residues; optionally, aromatic dicarboxylic acid residues or aliphatic dicarboxylic acid residues or ester residues thereof; 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and 1,4-cyclohexanedimethanol residues.

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