raxair Technology, Inc.multilayer adsorber beds, used for removing impurities including water, carbon dioxide, methane, carbon monoxide and nitrogen from a gas stream containing hydrogenUS7811359Jan 18, 2007Oct 12, 2010General Electric CompanyComposite membrane for separation of carbon dioxideWO2002049742A1 *Dec 3, 2001Jun 27, 2002Praxair Technology IncEnhanced rate psa process* Cited by examinerC