EP 0558166 B1 19980603 - Ventilated cigarette filter
Title (en)
Ventilated cigarette filter
Title (de)
Ventilierte Filtercigarette
Title (fr)
Filtre de cigarette ventile
Publication
Application
Priority
DE 4205658 A 19920225
Abstract (en)
[origin: EP0558166A2] The invention relates to a ventilatable filter cigarette having three chambers (2, 4, 6), the chamber (2) at the tobacco rod end having a high pressure drop and a low tar retention owing to the fact that a core (12) of air-permeable cellulose acetate fibres is surrounded by a shell (14) of virtually air-impermeable cellulose acetate fibres. <IMAGE>
IPC 1-7
IPC 8 full level
A24D 1/04 (2006.01); A24D 3/04 (2006.01); A24D 3/10 (2006.01); A24D 3/16 (2006.01)
CPC (source: EP US)
A24D 3/043 (2013.01 - EP US); A24D 3/163 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI NL PT
DOCDB simple family (publication)
EP 0558166 A2 19930901; EP 0558166 A3 19941123; EP 0558166 B1 19980603; AT E166768 T1 19980615; CA 2090090 A1 19930826; CZ 23593 A3 19931117; CZ 284707 B6 19990217; DE 4205658 A1 19930826; DE 59308624 D1 19980709; DK 0558166 T3 19990322; ES 2117092 T3 19980801; HU 217452 B 20000128; HU 9300502 D0 19930528; HU T68483 A 19950628; JP 3023037 B2 20000321; JP H05336943 A 19931221; PL 169754 B1 19960830; PL 297678 A1 19930906; SI 9300089 A 19930930; SI 9300089 B 20011231; SK 12293 A3 19930909; SK 279967 B6 19990611; UA 35558 C2 20010416; US 5423336 A 19950613
DOCDB simple family (application)
EP 93250046 A 19930210; AT 93250046 T 19930210; CA 2090090 A 19930222; CZ 23593 A 19930219; DE 4205658 A 19920225; DE 59308624 T 19930210; DK 93250046 T 19930210; ES 93250046 T 19930210; HU 9300502 A 19930224; JP 3708393 A 19930225; PL 29767893 A 19930209; SI 9300089 A 19930222; SK 12293 A 19930222; UA 93003113 A 19930318; US 2200393 A 19930224