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Patentes

Citada por

Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US406487630 Ene 197627 Dic 1977Stanley I. WolfAir-pollution filter and face mask
US41417034 Mar 197727 Feb 1979Stanley I. WolfAir-pollution filter and face mask
US42339728 May 197818 Nov 1980Portable air filtering and breathing assist device
US441497310 Mar 198115 Nov 1983U.S.D. Corp.Respirator face mask
US454311230 Abr 198424 Sep 1985Figgie International Inc.Sorbent type filter assembly for a respirator and method of making same
US454862630 Abr 198422 Oct 1985Figgie International Inc.Particulate air filter assembly
US457911323 Abr 19841 Abr 1986Parmelee Industries, Inc.Disposable covers for respirators
US478792515 Abr 198329 Nov 1988Figgie International Inc.Gas filter canister housing assembly
US485034620 Oct 198625 Jul 1989WGM Safety Corp.Respirator
US492151230 Mar 19891 May 1990American Optical CorporationFilter element
US493436117 Feb 198919 Jun 1990WGM Safety Corp.Respirator
US498113416 Ene 19901 Ene 1991Filtering face mask with inhalation/exhalation check valves
US503684419 Jun 19906 Ago 1991Mine Safety Appliances CompanyCover assembly and pre-filter for a respirator
US522248811 Jul 199129 Jun 1993Donaldson Company, Inc.Respirator air filter cartridge with a replaceable filter element
US564735628 Jul 199315 Jul 1997Donaldson Company, Inc.Respirator cartridge with sealing fit test structure and method of use
US57662879 Abr 199716 Jun 1998Monsanto CompanyRespiratory filter and sampling device
US588603227 Ene 199823 Mar 1999Redox Pharmaceutical CorporationMethod of treating cyanide poisoning
US627717820 Ene 199521 Ago 20013M Innovative Properties CompanyRespirator and filter cartridge
US63639343 Sep 19982 Abr 2002Parmalee Industries, Inc.Respirator filter protective cover
US658497624 Jul 19981 Jul 20033M Innovative Properties CompanyFace mask that has a filtered exhalation valve
US670192511 Abr 20029 Mar 2004Protective hood respirator
US676116917 Ago 200113 Jul 2004Vase TechnologyBi/multi-directional filter cartridge and filter platform for mounting the cartridge thereon
US679370228 Jun 200121 Sep 2004Filter cartridge platform and filter cartridge for use on the platform
US680512412 Ago 200219 Oct 20043M Innovative Properties CompanyFace mask that has a filtered exhalation valve
US75593239 Nov 200514 Jul 2009Respan Products, Inc.Disposable mask assembly with exhaust filter
USD2712462 Mar 19811 Nov 1983U.S.D. Corp.Combined respirator face piece and strap units

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