EP 3912484 A1 20211124 - TOBACCO SMOKE FILTER
Title (en)
TOBACCO SMOKE FILTER
Title (de)
TABAKRAUCHFILTER
Title (fr)
FILTRE À FUMÉE DE TABAC
Publication
Application
Priority
- GB 201104475 A 20110316
- EP 12712141 A 20120314
- GB 2012000243 W 20120314
Abstract (en)
A tobacco smoke filter or filter element comprising a longitudinal extending core which includes tobacco smoke filtering material; and an outer wrapper engaged around the longitudinal extending core; wherein the longitudinal extending core includes a downstream element comprising a longitudinally extending downstream core of tobacco smoke filtering material; a first inner wrapper engaged around the downstream core; and optionally a second inner wrapper engaged around the first inner wrapper; the first inner wrapper having a profiled (e.g. corrugated) outer surface which defines with the second inner wrapper or the outer wrapper at least one longitudinally extending channel; and wherein the downstream end of the outer wrapper extends beyond the downstream end of the core around which is engaged, to define a cavity at the downstream end of the filter.
IPC 8 full level
A24D 3/04 (2006.01)
CPC (source: EP KR US)
A24D 1/02 (2013.01 - KR); A24D 1/045 (2013.01 - KR); A24D 3/0279 (2013.01 - KR); A24D 3/04 (2013.01 - EP KR US); A24D 3/043 (2013.01 - KR)
Citation (applicant)
- US 3396733 A 19680813 - FRANK ALLSEITS, et al
- WO 2007135414 A1 20071129 - FILTRONA INT LTD [GB], et al
- GB 4017159 A
- WO 2006059134 A1 20060608 - FILTRONA INT LTD [GB], et al
- GB 2261152 A 19930512 - CIGARETTE COMPONENTS LTD [GB]
Citation (search report)
- [XI] US 4580584 A 19860408 - REYNOLDS MARTIN L [US], et al
- [XI] GB 2170695 A 19860813 - BROWN & WILLIAMSON TOBACCO
- [XI] GB 864247 A 19610329 - OLIN MATHIESON
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012123702 A1 20120920; WO 2012123702 A8 20130912; CN 103476278 A 20131225; CN 103476278 B 20170208; EP 2685849 A1 20140122; EP 2685849 B1 20210811; EP 3912484 A1 20211124; GB 201104475 D0 20110427; HU E056846 T2 20220328; JP 2014507957 A 20140403; JP 6042829 B2 20161214; KR 102245417 B1 20210427; KR 102646129 B1 20240308; KR 20140009385 A 20140122; KR 20190066082 A 20190612; KR 20210046864 A 20210428; KR 20230003270 A 20230105; LT 2685849 T 20211110; PL 2685849 T3 20220110; RU 2013143885 A 20150427; RU 2594557 C2 20160820; TW 201240615 A 20121016; UA 112313 C2 20160825
DOCDB simple family (application)
GB 2012000243 W 20120314; CN 201280013432 A 20120314; EP 12712141 A 20120314; EP 21185660 A 20120314; GB 201104475 A 20110316; HU E12712141 A 20120314; JP 2013558494 A 20120314; KR 20137024747 A 20120314; KR 20197015798 A 20120314; KR 20217011912 A 20120314; KR 20227042708 A 20120314; LT 12000243 T 20120314; PL 12712141 T 20120314; RU 2013143885 A 20120314; TW 101108604 A 20120314; UA A201312079 A 20120314