Biodegradable filter material and method for its manufacture

Biodegradable polyvinyl alcohol tobacco smoke filters, tobacco s

Cigarette filter

Cigarette filter material and cigarette filter

Cigarette filter micropleated web and method of manufacture

Cigarette filter which removes carcinogens and toxic chemicals

Cigarette smoke filter

Controlled draft and efficiency filter element for smoking artic

Environmentally non-persistant cellulose ester fibers

Fibrous bonded sheet material

Fibrous material for tobacco smoke filter

Filter cigarette having filter containing absorptive synthetic g

Filter material

Filtration materials

Increased volume synthetic fibres, procedure for producing them

Method of increasing the hardness of cigarette filter elements

Method of producing tobacco flavored cigarette filter

Microporous materials in cigarette filter construction

Molded article of biodegradable cellulose acetate and filter...

Multi-compartment expandable filter for a smoking product