| Patents for A62B 23 - Filters for breathing-protection purposes (3,172) |
|---|
| 09/14/1994 | EP0614400A1 Chromium-free impregnated activated universal respirator carbon for adsorption of toxic gases and/or vapors |
| 08/16/1994 | US5337739 Disposable bacteria filter |
| 08/10/1994 | CN1090516A Anti-dust, anti-poison mask box |
| 08/03/1994 | CN2173090Y Poison filtering box for gas mask |
| 07/26/1994 | US5331957 Respirator for only filtering air inhaled |
| 07/20/1994 | EP0606686A1 Disposable aerosol mask |
| 07/13/1994 | EP0588949A4 Nasal dilator |
| 06/29/1994 | CN2170121Y Three-dimensional dust-proof lamination filter material |
| 06/22/1994 | CN1088124A Filtering plug for nose |
| 06/21/1994 | US5322061 Disposable aerosol mask |
| 06/21/1994 | US5322060 Flexible, porous material impregnated with solution of ammonium biborate, ammonium sulfate, ammonium phosphate, SDS and water |
| 06/15/1994 | EP0357693B1 Molecular sieve arrangement |
| 06/08/1994 | CN2167736Y Breathing filter nose guard |
| 06/08/1994 | CN2167735Y Diving oxygen respirator filter |
| 06/01/1994 | CN1087285A Miniature air filter |
| 05/18/1994 | CN2164858Y Rainproof gas mask |
| 05/17/1994 | US5312467 Air filter assembly |
| 05/11/1994 | WO1994009884A1 Window air filter assembly |
| 05/10/1994 | US5309571 Fire-protecting suit |
| 05/05/1994 | DE4230627C1 Filter for preventing dust borne allergens entering heated room - comprises strongly acidic or alkaline filter medium located on inlet side of heater airflow |
| 03/30/1994 | EP0588949A1 Nasal dilator |
| 03/24/1994 | EP0584160A4 Filter. |
| 03/22/1994 | CA1327945C Elastomeric filtration materials |
| 03/08/1994 | US5291881 Air cleaning cartridge for a gas mask and breathing equipment with an insert |
| 03/02/1994 | EP0584160A1 Filter. |
| 03/02/1994 | CN2157798Y Filter for nostrils |
| 02/23/1994 | CN2156891Y Nose filter for breathing-protection |
| 02/18/1994 | CA2076256A1 Fire-protecting suit |
| 02/16/1994 | EP0582612A1 Protective respirator's air guidance system and protective respirator. |
| 02/09/1994 | EP0582286A1 Corrugated non-woven webs of polymeric microfiber |
| 02/09/1994 | CN2155240Y Nose cover |
| 02/05/1994 | CA2101192A1 Corrugated nonwoven webs of polymeric microfiber |
| 02/02/1994 | CN2154716Y Sterilizing nose mask |
| 01/11/1994 | US5277963 Filter sheet material |
| 01/04/1994 | US5275154 Activated charcoal filter layer for gas masks |
| 12/14/1993 | US5269294 Face mask impregnated with odor reducing molecular sieve material |
| 11/24/1993 | CN2147011Y Portable oxygen producer |
| 11/24/1993 | CN2147010Y Fresh air reduction gauze mask |
| 11/17/1993 | CN2146267Y Sanitary health nose cover |
| 09/14/1993 | US5243708 Disposable scented mask |
| 09/02/1993 | DE4206442A1 Surface filter used for protective clothing - comprises air permeable carrier of particles fixed by two component crosslinked adhesive |
| 09/01/1993 | EP0506858B1 New filter media for use in surgical and clean room masks |
| 08/31/1993 | US5240479 Pleated filter media having a continuous bead of adhesive between layers of filtering material |
| 08/26/1993 | DE4205648A1 Flat filter for protection against toxic skin-permeable chemicals - comprising air-permeable carrier coated with non-carbonised polymeric absorber particles applied with adhesive in point pattern |
| 08/13/1993 | CA2061073A1 Mask with means for passing out the expiration of air |
| 07/21/1993 | CN2138488Y Portable dust-remove poison filter for welding worker |
| 07/14/1993 | CN2137970Y Light nose covering filter |
| 07/14/1993 | CN1074142A Nostril filtering plug |
| 07/13/1993 | US5226412 Emergency respirator |
| 07/07/1993 | EP0549620A1 Filter spool for a respirator |
| 06/15/1993 | CA1319115C Respirator filter means for removal of tritiated water |
| 06/10/1993 | WO1993010896A1 Chromium-free impregnated activated universal respirator carbon for adsorption of toxic gases and/or vapors |
| 06/01/1993 | US5215658 Cartridge ejector device for fluid compression system |
| 04/07/1993 | CN2129159Y Nose film |
| 02/17/1993 | CN2127022Y Healthy filtering nose stopper |
| 01/27/1993 | EP0317593B1 Process, filter and device for supplying high-quality breathing air |
| 01/19/1993 | CA1312831C Compression seal canister |
| 01/06/1993 | CN1067574A 鼻扩张器 Nasal dilator |
| 12/30/1992 | CN2126089U Concealed hygienic nose purifier |
| 12/23/1992 | WO1992022340A1 Nasal dilator |
| 12/16/1992 | EP0518085A1 Cartridge for a respirator |
| 12/16/1992 | CN2124723U Multi-function respiratory dust-filtering cork |
| 12/02/1992 | EP0515986A1 Breathing mask |
| 11/22/1992 | CA2068925A1 Breathing mask |
| 11/15/1992 | WO1992020406A1 Filter |
| 11/15/1992 | CA2104579A1 Filter |
| 11/12/1992 | WO1992019322A1 Protective respirator's air guidance system and protective respirator |
| 11/12/1992 | DE4115313A1 Reduced size compact filter for harmful aerosols and gases - has active carbon filter bed compressed by springs with several filter stages arranged in series |
| 10/27/1992 | US5158077 Filter container for an absorption filter and a particle filter, for direct or indirect connnection to a protective mask |
| 10/07/1992 | EP0506916A1 Nose-filter and process for producing the same |
| 10/07/1992 | EP0506858A1 New filter media for use in surgical and clean room masks. |
| 09/29/1992 | US5150703 Liquid shield visor for a surgical mask with a bottom notch to reduce glare |
| 09/22/1992 | US5149435 Molecular sieve arrangement and filtering method for removal of a selected constituent |
| 09/02/1992 | CN2114474U Respiratory purifying cover |
| 08/25/1992 | US5140980 Hood mask and air filter system and method of manufacture thereof |
| 08/11/1992 | CA1306201C Plastic scrim |
| 08/05/1992 | CN2111770U Nose-wearing dustproof gas protector |
| 07/29/1992 | EP0495864A1 Respiratory protection device |
| 07/07/1992 | USH1072 Filter canisters, blowers, heaters and electronics |
| 06/29/1992 | WO1992011888A1 A breathing mask |
| 06/29/1992 | CA2099254A1 Breathing mask |
| 06/02/1992 | US5117820 Intra-nasal filter |
| 05/26/1992 | US5115613 Underground nuclear blast shelter |
| 05/19/1992 | US5113856 Impregnation for respirator filters filled with active carbon |
| 05/13/1992 | CN2104038U Fitler device for protecting face guard |
| 04/30/1992 | WO1992006742A1 Filter and process for producing the same |
| 04/23/1992 | DE4033344A1 Filter und verfahren zu seiner herstellung Filter and process for its preparation |
| 04/15/1992 | CN2101504U Portable oxygen generator |
| 04/02/1992 | WO1992004941A1 Filter spool for a respirator |
| 03/24/1992 | US5098621 Spreading a layer of micropackaged active material, mixing with surfactants and polyurethanes, molding and suspension |
| 03/10/1992 | US5094236 Filtering air |
| 02/25/1992 | US5090407 Chemical cartridge for protective respiratory mask |
| 02/18/1992 | CA1295816C Process, an apparatus and a chemical absorption filter for purifying inhaled air |
| 02/11/1992 | US5086768 Respiratory protective device |
| 02/05/1992 | EP0469498A2 Particle filtering halfmask |
| 01/22/1992 | CN2093661U Miniature air filter for nasal cavity |
| 01/22/1992 | CN2093653U 人工鼻 Artificial nose |
| 01/14/1992 | US5080094 Face mask |
| 01/08/1992 | EP0465371A2 Chemical cartridge for protective respiratory mask |
| 01/07/1992 | US5078132 Bonded adsorbent structures and respirators incorporating same |