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Current content: 157 117 910 patent documents

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139 301 new documents added

1 340 825 documents amended

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EP 0093478 B1 19860312 - FILTER CIGARETTE

Title (en)

FILTER CIGARETTE

Publication

EP 0093478 B1 19860312 (EN)

Application

EP 83200624 A 19830503

Priority

NL 8201808 A 19820503

Abstract (en)

[origin: EP0093478A2] A filter cigarette comprising at least a bar of cellulose acetate or other suitable filter material surrounded by a layer which is impermeable to air, and between said both items a layer of a material with an open structure, of which layer a ring adjacent to the tobacco column is sealed, has better properties and is easier to produce than a filter cigarette having grooves in the impermeable layer and the bar of filter material.

IPC 1-7

A24D 3/04

IPC 8 full level

A24D 3/04 (2006.01)

CPC (source: EP US)

A24D 3/043 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI LU NL SE

DOCDB simple family (publication)

EP 0093478 A2 19831109; EP 0093478 A3 19840118; EP 0093478 B1 19860312; AT E18498 T1 19860315; DE 3362510 D1 19860417; NL 8201808 A 19831201

DOCDB simple family (application)

EP 83200624 A 19830503; AT 83200624 T 19830503; DE 3362510 T 19830503; NL 8201808 A 19820503