Back to results
US 10,117,456 B2Granted
Activated carbon for smoking articles
AssigneePhilip Morris Products S.A.
InventorsGaetan Couderc, Ping Li, Roger Hofer
Life of this patent
Estimating the term…
Abstract
A smoking article includes a smokable material and a filter downstream of the smokable material. The filter includes activated carbon material having a BET of between 1000 and 2000 m2/g and exhibiting less particle breakthrough than granulated coconut shell derived activated carbon currently used for filters of smoking articles.
Claims14
A method comprising:
- physically activating a composition comprising cellulosic material and an added activatable binder to form an activated carbon material;
- providing filter material for use in a smoking article;
- and
- combining the activated carbon material and the filter material to form a filter for a smoking article.
1 more element
A method comprising:
- forming a filter of a smoking article by incorporating activated carbon material formed from a physical activation process that includes carbonizing a composition comprising cellulosic material and an added activatable binder.
A smoking article comprising:
- a smokable material;
- and
- a filter comprising activated carbon material downstream of the smokable material, the activated carbon material having a BET of between 1000 and 2000 m2/g and a ball-pan hardness of greater than about 95%;
- wherein the activated carbon material is formed from a physical activation process that includes carbonizing a composition comprising cellulosic material and an added activatable binder;
- and
- wherein the activated carbon material exhibits, in a standard plug-space-plug configuration test filter, less particle breakthrough than granulated coconut shell activated carbon activated to the same degree.
3 more elements
Dependencies are inferred from the claim text.