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:
Mar. 19, 2019
Filed:
Sep. 18, 2013
Philip Morris Products S.a., Neuchatel, CH;
Dorothy Tritz, Yverdon-les-Bains, CH;
Charles Kuersteiner, Jouxtens-Mezery, CH;
Leonardo Nappi, Hauterive, CH;
Alen Kadiric, Biel, CH;
Philip Morris Products S.A., Neuchâtel, CH;
Abstract
Smoking articles have a mouth end portion that includes a central filter plug having an outer surface. The mouth end portion further includes a peripheral region disposed about the outer surface of the central filter plug. The peripheral region may include one or more channels through which smoke may flow. The smoking article includes an exterior wrap that is disposed about the peripheral region of the mouth end filter portion. The permeability of smoke through the peripheral region is five times or more greater than the permeability of smoke through the central filter plug. By increasing the permeability of smoke around the central filter plug, less smoke travels through the central filter plug in the mouth end portion and less staining of the mouth end of the central filter plug results.