| Patents for A62B 23 - Filters for breathing-protection purposes (3,172) |
|---|
| 05/17/1989 | EP0315881A2 Filter breathing protection device |
| 05/09/1989 | US4827924 High efficiency respirator |
| 05/02/1989 | US4826513 Laser smoke particulate/odor filter system |
| 04/13/1989 | DE3733003A1 Pollen protection device |
| 04/12/1989 | CN2035638U Sanitation nose cork |
| 04/11/1989 | CA1252396A1 Molded fibrous filtration products |
| 04/06/1989 | DE3820138A1 Respiratory filter |
| 04/06/1989 | DE3732025A1 Chemisorption filter for the elimination of tobacco smoke and solid and gaseous substances from breathing air |
| 03/21/1989 | US4813981 Dual mode air purifier and method |
| 03/21/1989 | US4813410 Gas mask filter for the removal of low level ethylene oxide contaminants from air comprising dried cationic exchange resins |
| 02/28/1989 | US4807619 Resilient shape-retaining fibrous filtration face mask |
| 02/28/1989 | US4807614 For emergencies |
| 02/16/1989 | DE3810994A1 Combination filter |
| 02/07/1989 | US4802898 Method and apparatus for removing cyanogen chloride from air |
| 01/31/1989 | US4801311 Carbon impregnated with metal salts and triethylenediamine |
| 01/18/1989 | CN2030899U Air filter for removing bacteria |
| 12/29/1988 | DE3719419A1 Filter cartridge for a respirator mask |
| 12/29/1988 | DE3719067A1 Bactericidal chemisorption filter |
| 12/27/1988 | US4793338 Anti-siphoning liquid valve filter |
| 12/22/1988 | DE3719415A1 Filter device and process for the production thereof |
| 12/15/1988 | WO1988009681A1 Protective facial mask |
| 12/14/1988 | EP0294707A2 Breathing protection mask |
| 12/13/1988 | US4790860 Respirator for workers in toxic environments; regeneratable filter cartridge by heating |
| 12/06/1988 | CA1245802A1 Disposable respirator |
| 12/01/1988 | WO1988009205A1 Process, filter and device for supplying high-quality breathing air |
| 11/29/1988 | US4787925 Gas filter canister housing assembly |
| 11/16/1988 | CN87104444A Respiratory mouth mask unit for protecting man's breath |
| 11/15/1988 | CA1244779A1 Gas filter canister housing assembly |
| 10/25/1988 | CA1243583A1 Protective hood with co.sub.2 absorbent |
| 10/12/1988 | EP0286016A1 Dust filter in the shape of a half-mask |
| 09/07/1988 | WO1988006468A1 Respiratory protective device |
| 09/07/1988 | EP0281275A2 High efficiency respirator |
| 07/27/1988 | EP0275934A2 Emergency protection hood |
| 07/06/1988 | CN87214083U Dust cover for breathing |
| 06/01/1988 | EP0269589A1 Filter container for connection to a breathing protection mask |
| 06/01/1988 | EP0268853A1 Filter against microorganisms and inorganic fine particles |
| 05/18/1988 | EP0267428A1 Breathing mask |
| 05/18/1988 | CN87209540U Protective gauge mask for safeguarding breath |
| 05/11/1988 | EP0266456A1 Respiratory face mask |
| 04/28/1988 | DE3636451A1 Chemisorption filter for separating off carcinogenic substances such as dioxin, furan, formaldehydes, PAHs, benzopyrene and other toxic substances |
| 03/31/1988 | DE3620666A1 Multiply active, bactericidal-fungicidal chemisorption filter with integrated ozonisation and ionisation |
| 03/30/1988 | CN87212676U 空气净化器 Air Purifier |
| 03/29/1988 | CA1234463A1 Web of bicomponent blown fibers |
| 03/08/1988 | US4729371 Respirator comprised of blown bicomponent fibers |
| 02/25/1988 | DE3628403A1 Separating off, by chemical absorption, highly toxic pollutants, such as dioxins, furans, formaldehydes, PAH's (polyaromatic hydrocarbons) and other toxic substances |
| 02/23/1988 | US4726365 Air filtering apparatus |
| 02/18/1988 | DE3615051A1 Process for the manufacture of a bactericidal chemisorption ceiling preferably for health clinics, hospitals, old peoples' homes and similar places of residence |
| 02/09/1988 | US4723542 Breathing mask and its production process |
| 01/19/1988 | US4719911 Air filter mask with mouth retention means |
| 12/22/1987 | US4714486 Automated production of canisters |
| 12/16/1987 | EP0249124A2 Filter casing for respirator masks |
| 11/26/1987 | DE3617593A1 Apparatus for purifying irradiated, contaminated and poisoned air |
| 10/28/1987 | EP0242703A2 Cartridge for the regeneration of breathing air |
| 10/22/1987 | DE3612932A1 Filter compositions for air purification apparatuses |
| 10/14/1987 | EP0241221A1 Resilient shape-retaining fibrous filtration face mask |
| 10/06/1987 | CA1227721A1 Unified filter and connector housing assembly incorporating a diversion valve |
| 09/29/1987 | US4696687 Filters |
| 08/25/1987 | US4688567 Gas mask |
| 08/18/1987 | CA1225602A1 Safety pillow for preventing smoke inhalation |
| 08/05/1987 | EP0230875A1 Apparatus for cleaning breathing air |
| 07/16/1987 | WO1987004233A1 Process, device and chemisorption filter for purifying breathing air |
| 07/16/1987 | DE3600462A1 Chemisorption filter package for the elimination of fickle odours, odours in sick rooms and tobacco smoke |
| 07/07/1987 | US4677976 Emergency mask |
| 06/30/1987 | US4677096 Porous substrate impregnated with zinc oxide and a water solu ble salt |
| 06/30/1987 | US4677019 Utilize activated carbon particles sheathed with polymeric binder permeable to chemical pollutants |
| 06/09/1987 | US4671271 Protective facial mask |
| 04/15/1987 | EP0218348A1 Respirators incorporating bonded adsorbant structures |
| 03/10/1987 | CA1218913A1 Emergency mask |
| 02/26/1987 | DE3521536C1 Room filter unit for shelters |
| 02/25/1987 | CN85106094A Air filter |
| 02/04/1987 | EP0210200A1 Nasal capsules |
| 01/20/1987 | CA1216837A1 Flocked fabric laminate for protection against chemical agents |
| 01/20/1987 | CA1216836A1 Filter paper |
| 01/13/1987 | US4636485 Oxidation |
| 12/09/1986 | US4627431 Protective hood with CO2 absorbent |
| 11/04/1986 | CA1213496A1 Single-element filter and respirator |
| 10/28/1986 | US4619948 Composite active filter material |
| 10/08/1986 | EP0196953A1 Respiratory mask and method of manufacturing it |
| 09/17/1986 | EP0194657A1 Protective hood with CO2 absorbent |
| 09/10/1986 | EP0193861A2 Carbon monoxide breathing air filter |
| 07/31/1986 | WO1986004249A1 Nasal capsules |
| 07/22/1986 | US4601287 For use in outdoor activities in cold weather |
| 07/15/1986 | US4600002 Disposable respirator |
| 06/04/1986 | EP0183059A1 Fold-flat disposable respirator |
| 06/03/1986 | US4592350 Respirator |
| 03/04/1986 | US4573461 Nasal sealer and filter |
| 02/25/1986 | US4572178 Emergency mask |
| 01/07/1986 | US4563333 In air circulation ducts of buildings |
| 01/07/1986 | US4562837 Air escape filter apparatus |
| 11/27/1985 | EP0162546A1 Molded fibrous filtration products |
| 10/30/1985 | EP0159698A2 Gas mask canister |
| 10/30/1985 | EP0159697A2 Gas mask canister |
| 10/23/1985 | EP0158644A1 Nose filter |
| 10/22/1985 | US4548626 Particulate air filter assembly |
| 10/02/1985 | EP0155991A1 Carbon monoxide respiratory apparatus |
| 09/24/1985 | US4543112 Sorbent type filter assembly for a respirator and method of making same |
| 08/27/1985 | US4537748 Apparatus for treating compressed air for breathing purposes |
| 08/21/1985 | EP0151685A1 Pt catalyst on a support as an air purification agent |
| 08/20/1985 | US4536440 Molded fibrous filtration products |
| 07/24/1985 | EP0149590A2 Protective respirator |