(19)
(11) EP 1 746 906 A1

(12)

(43) Date of publication:
31.01.2007 Bulletin 2007/05

(21) Application number: 05740341.2

(22) Date of filing: 27.04.2005
(51) International Patent Classification (IPC): 
A24D 3/08(2006.01)
(86) International application number:
PCT/US2005/014476
(87) International publication number:
WO 2005/112671 (01.12.2005 Gazette 2005/48)
(84) Designated Contracting States:
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
Designated Extension States:
AL BA HR LV MK YU

(30) Priority: 10.05.2004 US 842165

(71) Applicant: Brown & Williamson Holdings, Inc.
Wilmington, DE 19803 (US)

(72) Inventors:
  • CARAWAY, JR., John W.
    Macon, Georgia 31210 (US)
  • JACKSON, Thaddeus, J.
    High Point, NC 27265 (US)

(74) Representative: Tanner, James Percival et al
D Young & Co 120 Holborn
London EC1N 2DY
London EC1N 2DY (GB)

   


(54) SELECTIVE FILTRATION OF CIGARETTE SMOKE USING CHITOSAN DERIVATIVES