of cellulose or cellulose derivatives

Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes > Use of materials for tobacco smoke filters > of organic materials as carrier or major constituent > of cellulose or cellulose derivatives

Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes > Use of materials for tobacco smoke filters > of organic materials as carrier or major constituent (of ion exchange materials A24D3/12) > of cellulose or cellulose derivatives