Tobacco smoke filter element

Claim 1

A UNITARY WRAPPED SMOKING ARTICLE COMPRISING A MAIN PORTION CONSISTING ESSENTIALLY OF TOBACCO AND A FILTER PORTION AT ONE END THEREOF INCLUDING A FILTER ELEMENT FOR SMOKE CAPABLE OF ADSORBING UNDESIRABLE CONSTITUENTS OF TOBACCO SMOKE, SAID FILTER ELEMENT COMPRISING A CARRIER BASE, A FINELY DIVIDED ADSORPTIVE MATERIAL UNIFORMLY DISPERSED IN THE CARRIER BASE AND A VOLATILE SMOKE-FLAVORING AGENT ADSORBED ON THE ADSORPTIVE MATERIAL, SUBSTANTIALLY ALL OF THE CONTENT OF SAID FLAVORING AGENT IN THE ARTICLE BEING ON THE SAID ADSORPTIVE MATERIAL WHERE, WHEN THE ARTICLE IS SMOKED, IT IS AWAY FROM THE DESTRUCTIVE EFFECT OF THE HEAT OF COMBUSTION OF THE TOBACCO, THE FLAVORING AGENT BEING HELD ON THE ADSORPTIVE MATERIAL BY ADSORPTIVE FORCES AND BEING SELECTIVELY AND PROGRESSIVELY ELUTABLE FROM THE ADSORPTIVE MATERIAL BY THE PARTICULATE MATTER IN THE TOBACCO SMOKE AND THUS RELEASABLE TO THE SMOKE SUBSTANTIALLY IN PROPORTION TO THE AMOUNT OF SMOKE PASSING THROUGH THE FILTER ELEMENT, THE ADSORPTIVE MATERIAL ASSOCIATED WITH THE FLAVORING AGENT BEING FURTHER CAPABLE OF ADSORBING UNDESIRABLE CONSTITUENTS OF THE TOBACCO SMOKE.