Patent · US Active

Filter with improved hardness and filtration efficiency

US10555553B2 · kind B2 · utility

46Cited by

1References

16Claims

0Family size

Assignee

Philip Morris Products S.A. · CH

Inventors

Enrico Binassi · Bologna, IT
Yves Jordil · Lausanne, CH

Key dates

Filing date	Dec 23, 2014
Grant date	Feb 11, 2020
Priority date	—
Expiry date	Nov 24, 2035

Classification

Technology area (CPC A)Human Necessities
CPC primaryA24D3/14
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

There is provided a smoking article comprising an aerosol generating substrate and a mouthpiece attached to the aerosol generating substrate. The mouthpiece includes a segment comprising a filtration material comprising polylactic acid, and an additive for reducing phenols. The mouthpiece further comprises one or more wrappers circumscribing the segment, the one or more wrappers have a combined basis weight of at least about 50 grams per square metre (gm-2).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.