Invention Grant
- Patent Title: Smoking article with reduced mouth end staining
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Application No.: US14431192Application Date: 2013-09-18
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Publication No.: US10231482B2Publication Date: 2019-03-19
- Inventor: Dorothy Tritz , Charles Kuersteiner , Leonardo Nappi , Alen Kadiric
- Applicant: PHILIP MORRIS PRODUCTS S.A.
- Applicant Address: CH Neuchâtel
- Assignee: Philip Morris Products S.A.
- Current Assignee: Philip Morris Products S.A.
- Current Assignee Address: CH Neuchâtel
- Agency: Mueting, Raasch & Gebhardt, P.A.
- Priority: EP12186683 20120928
- International Application: PCT/IB2013/058646 WO 20130918
- International Announcement: WO2014/049494 WO 20140403
- Main IPC: A24D1/02
- IPC: A24D1/02 ; A24D3/04

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.
Public/Granted literature
- US20150257439A1 SMOKING ARTICLE WITH REDUCED MOUTH END STAINING Public/Granted day:2015-09-17
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