EP 1381409 A2 20040121 - RESPIRATORY AIR FILTER
Title (en)
RESPIRATORY AIR FILTER
Title (de)
ATEMLUFTFILTER
Title (fr)
FILTRE RESPIRATOIRE
Publication
Application
Priority
- DE 0201507 W 20020424
- DE 10120182 A 20010424
- DE 10152785 A 20011029
Abstract (en)
[origin: WO02085426A2] The invention relates to a respiratory air filter. Known filter devices have a half mask and a filter element. Filter devices of this type have a complex construction. The aim of the invention therefore is to provide a respiratory air filter, which has a simple construction and is inexpensive to produce. This is achieved by a respiratory air filter (10) comprising an air-permeable sleeve (11) and at least one filter layer (12, 12') that is located in said sleeve (11) and contains activated carbon. Said respiratory air filter is extremely simple and is constructed from inexpensive materials. As it need only be large enough to sufficiently cover the nose and mouth, it is extremely compact and convenient. As a result of its low cost and small dimensions, the filter can be taken everywhere, in the manner of paper tissue or chewing gum and is thus always available for use.
IPC 1-7
IPC 8 full level
A41D 13/11 (2006.01); A62B 23/02 (2006.01); B01D 39/14 (2006.01); B01D 39/16 (2006.01); B01D 39/20 (2006.01)
CPC (source: EP US)
A41D 13/11 (2013.01 - EP US); A62B 23/025 (2013.01 - EP US); B01D 39/1623 (2013.01 - EP US); B01D 39/2062 (2013.01 - EP US); B01D 2239/0622 (2013.01 - EP US); B01D 2239/0627 (2013.01 - EP US); B01D 2239/065 (2013.01 - EP US); B01D 2239/086 (2013.01 - EP US); B01D 2239/1241 (2013.01 - EP US); Y10S 55/33 (2013.01 - EP US); Y10S 55/35 (2013.01 - EP US); Y10S 55/42 (2013.01 - EP US)
Citation (search report)
See references of WO 02085426A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02085426 A2 20021031; WO 02085426 A3 20030410; EP 1381409 A2 20040121; JP 2004535279 A 20041125; US 2004144255 A1 20040729; US 7101423 B2 20060905
DOCDB simple family (application)
DE 0201507 W 20020424; EP 02764044 A 20020424; JP 2002582999 A 20020424; US 47609104 A 20040223