Filter containing a metal phthalocyanine and a polycationic...

Tobacco – Smoke separator or treater – By chemical reaction – e.g. – ion-exchange – chelating,...

Reexamination Certificate

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Details

C131S332000, C131S331000, C131S200000

Reexamination Certificate

active

07104265

ABSTRACT:
A tobacco smoke filter comprising one or more than one metal phthalocyanine, such as a copper phthalocyanine or an iron phthalocyanine, and further comprising one or more than one polycationic polymer.

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