Global Patent Index - EP 0859558 B1

EP 0859558 B1 2000-10-11 - FILTER CIGARETTE

Title (en)

FILTER CIGARETTE

Title (de)

FILTERZIGARETTE

Title (fr)

CIGARETTE FILTRE

Publication

EP 0859558 B1 (DE)

Application

EP 96937308 A

Priority

  • DE 19541873 A
  • EP 9604733 W

Abstract (en)

[origin: DE19541873A1] Disclosed is a filter cigarette whose filter a) contains fibrous filter material, b) contains an additive with antimutagenic effects on the cigarette smoke in a quantity equivalent to less than 15 wt % of the weight of fibre and c) during test smoking of an unventilated filter cigarette of this type but containing no additive, has a nicotine retention RN (in %, determined according to CORESTA, recommended method no. 9) which satisfies the following formula: RN >/= 100 * (1-D), in which D = exp (A * B + C), A being 21 mm - filter length (mm) for filter lengths </= 25 mm or A being -4 mm for filter lengths > 25 mm, B being 9.3 * 10<-3> (1/mm) and C being -(d<4> * DELTA p * K + L) with d = filter diameter (mm) wherein DELTA p = draw resistance of the filter (mmWS), K = 1.0228 * 10<-6> (1/(mm<4> * mmWs)) and L = 0.2334. With this filter, it has been shown with the Ames test with strain TA 98 that mutagenic substances can be filtered with a selectivity at least 10 % better than other smoke components. Also disclosed is an especially suitable process for producing such a filter cigarette.

IPC 1-7 (main, further and additional classification)

A24D 3/14; A24D 3/10

IPC 8 full level (invention and additional information)

A24D 1/04 (2006.01); A24D 3/04 (2006.01); A24D 3/06 (2006.01); A24D 3/10 (2006.01); A24D 3/14 (2006.01); A24D 3/16 (2006.01)

CPC (invention and additional information)

A24D 3/16 (2013.01); A24D 3/04 (2013.01); A24D 3/048 (2013.01); A24D 3/10 (2013.01); A24D 3/14 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19541873 A1 19970515; AT 196829 T 20001015; AU 701048 B2 19990121; AU 7496496 A 19970529; BG 102414 A 19990430; BG 63814 B1 20030228; BR 9611382 A 19991228; CA 2234795 A1 19970515; CA 2234795 C 20020430; CN 1105518 C 20030416; CN 1202086 A 19981216; CZ 294476 B6 20050112; CZ 9801420 A3 20001011; DK 0859558 T3 20010129; EE 03660 B1 20020415; EE 9800152 A 19981215; EP 0859558 A1 19980826; EP 0859558 B1 20001011; ES 2154420 T3 20010401; GE P20002134 B 20000310; GR 3035218 T3 20010430; HK 1016434 A1 20030815; HU 9903488 A2 20000728; HU 9903488 A3 20010228; IL 124335 A 20001031; IL 124335 D0 19990126; IS 1800 B 20020116; IS 4737 A 19980508; JP 3604397 B2 20041222; JP H11501525 A 19990209; KR 100265506 B1 20000915; LT 4447 B 19990125; LT 98063 A 19981026; LV 12123 A 19980920; LV 12123 B 19981220; NO 306144 B1 19990927; NO 982079 A 19980507; NO 982079 D0 19980507; NZ 321598 A 19990830; PL 184287 B1 20020930; PL 326553 A1 19980928; PT 859558 E 20010330; RO 118922 B 20040130; RU 2140758 C1 19991110; SI 9620124 A 19981231; SK 282028 B6 20011008; SK 59898 A3 19981007; TR 9800832 T2 19980721; US 6145511 A 20001114; WO 9716986 A1 19970515

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