Patent · US Active

Multilayer combustible heat source

US11213064B2 · kind B2 · utility

1Cited by

9References

14Claims

0Family size

Assignee

Philip Morris Products S.A. · CH

Inventors

Stephane Roudier · Neuchâtel, CH
Frank Joerg Clemens · Frauenfeld, CH
Marina Ismael Michen · Sursee, CH

Key dates

Filing date	Feb 21, 2013
Grant date	Jan 4, 2022
Priority date	—
Expiry date	Jan 1, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24992
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A multilayer combustible heat source for a smoking article is provided, including a combustible first layer including carbon; and a second layer in direct contact with the first layer, the second layer including carbon and at least one ignition aid, wherein the combustible first layer and the second layer are longitudinal concentric layers having a density of at least 0.6 g/cm3, and wherein the composition of the first layer is different from the composition of the second layer.

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