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:
Jul. 13, 2021
Filed:
Feb. 22, 2017
Philip Morris Products S.a., Neuchatel, CH;
Leonardo Nappi, Vallamand, CH;
Yves Jordil, Lausanne, CH;
Philip Morris Products S.A., Neuchatel, CH;
Abstract
A smoking article () comprises: a tobacco rod (); a filter () in axial alignment with the tobacco rod, the filter () comprising: a hollow tube segment () having a wall thickness of no more than 0.9 mm; and a filtration portion upstream of the hollow tube segment (), the filtration portion comprising one or more filter segments () (). The hollow tube segment () defines a cavity () at the mouth end of the filter () providing an unrestricted flow channel that extends from the downstream end of the filtration portion to the mouth end of the filter (). The hollow tube segment () is formed from a fibrous filtration material and comprises a filter plasticiser, wherein the amount of filter plasticiser is at least 22 percent by weight of the fibrous filtration material.