Cigarette filter

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

Reexamination Certificate

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Details

C131S331000

Reexamination Certificate

active

07487782

ABSTRACT:
A cigarette filter has a filter medium containing an inorganic basic substance such as sodium carbonate and a moisturizing agent selected from the group consisting of glycerin, sodium propionate and sodium lactate.

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Taiwan Patent Office, Decision of Rejection, Apr. 20, 2004, Taiwan.
Derwent Publications Ltd., London, GB; AN 1979-09448B And SU 597 510 A-03-14-1978.

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