EP 0250806 A3 19880601 - METHOD AND DEVICE FOR REMOVING NITRIC OXIDE FROM CIGARETTE SMOKE
Title (en)
METHOD AND DEVICE FOR REMOVING NITRIC OXIDE FROM CIGARETTE SMOKE
Publication
Application
Priority
US 88060486 A 19860630
Abstract (en)
[origin: EP0250806A2] Method method for making a chemically-treated filter element for cigarettes, to reduce the concentration of nitrogen oxide by-products in cigarette smoke, by applying a non-ionic solution or dispersion containing zinc oxide or zinc acetate to the substrate in the garniture feed, the non-ionic solution or dispersion also containing a polyoxyalkylene derivative of a sorbitan fatty acid ester, a monoester of a polyhydroxyalcohol, or a diester of a polyhydroxy alcohol, or containing a mixture of the said dispersants.
IPC 1-7
IPC 8 full level
B01J 20/02 (2006.01); A24D 3/02 (2006.01); A24D 3/08 (2006.01); A24D 3/14 (2006.01); A24D 3/16 (2006.01); B01D 53/56 (2006.01); B01D 53/81 (2006.01); B01J 20/26 (2006.01)
CPC (source: EP)
A24D 3/08 (2013.01); A24D 3/14 (2013.01); A24D 3/16 (2013.01)
Citation (search report)
- [AD] US 3618619 A 19711109 - KIEFER JOHN E
- [X] BE 686826 A 19670215
- [A] DE 2365263 A1 19741205 - BRITISH AMERICAN TOBACCO CO
- [A] GB 1400197 A 19750716 - BRITISH AMERICAN TOBACCO CO
- [AD] US 3428056 A 19690218 - SUBLETT BOBBY JONES, et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0250806 A2 19880107; EP 0250806 A3 19880601; BR 8703293 A 19880315; CN 87104595 A 19880113; JP S6374476 A 19880404
DOCDB simple family (application)
EP 87106954 A 19870513; BR 8703293 A 19870629; CN 87104595 A 19870630; JP 16388987 A 19870630