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Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US565322523 May 19945 Ago 1997IntertechniqueIndividual protective and breathing equipment for contaminated environments
US646053921 Sep 20008 Oct 20023M Innovative Properties CompanyRespirator that includes an integral filter element, an exhalation valve, and impactor element
US684324818 Abr 200118 Ene 20053M Innovative Properties CompanyFiltering face mask that has a new exhalation valve
US685446311 May 199415 Feb 20053M Innovative Properties CompanyFiltering face mask that has a new exhalation valve
US71178683 Oct 200010 Oct 20063M Innovative Properties CompanyFibrous filtration face mask having a new unidirectional fluid valve
US731110418 Abr 200125 Dic 20073M Innovative Properties CompanyMethod of making a filtering face mask that has an exhalation valve
US74289036 Oct 200030 Sep 20083M Innovative Properties CompanyFibrous filtration face mask having a new unidirectional fluid valve
US74939003 Oct 200024 Feb 20093M Innovative Properties CompanyFibrous filtration face mask having a new unidirectional fluid valve
US799255811 Sep 20079 Ago 2011AirWay Technologies LLCStability medical mask