The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 2022
Filed:
Feb. 21, 2013
Applicant:
Philip Morris Products S.a., Neuchatel, CH;
Inventors:
Stephane Roudier, Colombier, CH;
Frank Joerg Clemens, Frauenfeld, CH;
Marina Ismael Michen, Naenikon, CH;
Assignee:
Philip Morris Products S.A., Neuchatel, CH;
Primary Examiner:
Int. Cl.
CPC ...
A24D 1/22 (2020.01); A24B 15/16 (2020.01);
U.S. Cl.
CPC ...
A24D 1/22 (2020.01); A24B 15/165 (2013.01); Y10T 428/24992 (2015.01);
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/cm, and wherein the composition of the first layer is different from the composition of the second layer.