EP 1688052 A1 20060809 - Smoking article with ventilation tube
Title (en)
Smoking article with ventilation tube
Title (de)
Rauchartikel mit Belüftungsrohr
Title (fr)
Article à fumer avec tube de ventilation
Publication
Application
Priority
EP 05250558 A 20050202
Abstract (en)
A cigarette (50) comprises a tobacco rod (52) in axial alignment with a ventilation tube (10) having an air permeable wall (12). Filter material (58,60) is provided in the central passage of the tube. The annular rod end wall of the tube is air permeable to provide a ventilation surface (20) through which, when the cigarette is smoked, air is drawn into the tube wall and then into the filter material through the air permeable inner wall of the tube; where it mixes with mainstream smoke from the burning tobacco rod.
IPC 8 full level
CPC (source: EP US)
A24D 1/027 (2013.01 - EP US); A24D 3/043 (2013.01 - EP US)
Citation (search report)
- [XAAA] US 4498487 A 19850212 - FRATTOLILLO ANTONIO P A [CH]
- [A] EP 0790007 A1 19970820 - REYNOLDS TOBACCO CO R [US]
- [A] US 4649941 A 19870317 - NORMAN ALAN B [US], et al
- [A] US 4693265 A 19870915 - NORMAN ALAN B [US]
- [A] US 4608999 A 19860902 - JOHNSON ROBERT R [US]
- [X] PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 05250558 A 20050202