EP 0474940 B2 19991006 - Concentric smoking filter having discrete tow and web filter media
Title (en)
Concentric smoking filter having discrete tow and web filter media
Title (de)
Konzentrischer Rauchfilter mit Filtriermedien aus Fadenmaterial und Bahnmaterial
Title (fr)
Filtre à fumée concentrique avec des milieux filtrants en câble de filaments et en bande
Publication
Application
Priority
US 57187890 A 19900824
Abstract (en)
[origin: EP0474940A1] A concentric smoking filter (12) in which one of the filter media (20 or 21) is a fibrous tow, such as fibrous cellulose acetate tow, and one of the filter media (21 or 20) is a web material, such as paper, is provided. The filter improves the taste, particularly, of "ultra-light" cigarettes. <IMAGE>
IPC 1-7
IPC 8 full level
A24D 3/04 (2006.01); A24D 3/06 (2006.01); A24D 3/08 (2006.01); A24D 3/10 (2006.01); A24D 3/16 (2006.01); B01D 39/16 (2006.01)
CPC (source: EP KR US)
A24D 3/04 (2013.01 - EP US); A24D 3/06 (2013.01 - EP); A24D 3/10 (2013.01 - EP KR US); A24D 3/163 (2013.01 - EP KR)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI NL SE
DOCDB simple family (publication)
EP 0474940 A1 19920318; EP 0474940 B1 19941214; EP 0474940 B2 19991006; AT E115369 T1 19941215; AU 635095 B2 19930311; AU 6774890 A 19920227; CA 2031727 A1 19920225; CA 2031727 C 20010410; DE 69015185 D1 19950126; DE 69015185 T2 19950524; DE 69015185 T3 20000309; DK 0474940 T3 19950403; DK 0474940 T4 20000403; ES 2066157 T3 19950301; ES 2066157 T5 19991216; FI 906092 A0 19901211; FI 906092 A 19920225; FI 94385 B 19950531; FI 94385 C 19950911; GR 3015326 T3 19950630; GR 3032144 T3 20000427; HK 162995 A 19951027; HU 212772 B 19961128; HU 908366 D0 19910729; HU T64455 A 19940128; JP 2767322 B2 19980618; JP H06269270 A 19940927; KR 0175139 B1 19990218; KR 920003914 A 19920327; NO 176464 B 19950102; NO 176464 C 19950412; NO 905639 D0 19901228; NO 905639 L 19920225; PL 166314 B1 19950531; PL 288311 A1 19920224; RU 1836040 C 19930823; TR 25717 A 19930901
DOCDB simple family (application)
EP 90313555 A 19901213; AT 90313555 T 19901213; AU 6774890 A 19901205; CA 2031727 A 19901207; DE 69015185 T 19901213; DK 90313555 T 19901213; ES 90313555 T 19901213; FI 906092 A 19901211; GR 950400504 T 19950307; GR 990403230 T 19991215; HK 162995 A 19951019; HU 836690 A 19901220; JP 41461190 A 19901226; KR 900021735 A 19901226; NO 905639 A 19901228; PL 28831190 A 19901218; SU 4894124 A 19901226; TR 121090 A 19901226