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Patentes

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Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US440677313 May 198127 Sep 1983Ashland Oil, Inc.Magnetic separation of high activity catalyst from low activity catalyst
US441176625 Feb 198225 Oct 1983Air Products and Chemicals, Inc.Iron catalyzed coal liquefaction process
US442163512 Feb 198220 Dic 1983Research Association for Residual Oil ProcessingProcess for simultaneously cracking heavy hydrocarbons into light oils and producing hydrogen
US51475273 Abr 198915 Sep 1992Ashland Oil, Inc.Magnetic separation of high metals containing catalysts into low, intermediate and high metals and activity catalyst
US77724241 Mar 200610 Ago 2010Eastman Chemical CompanyPolycarboxylic acid production system employing enhanced evaporative concentration downstream of oxidative digestion
US78165561 Mar 200619 Oct 2010Eastman Chemical CompanyPolycarboxylic acid production system employing enhanced multistage oxidative digestion
US782903729 Ago 20079 Nov 2010Eastman Chemical CompanyOxidation system with sidedraw secondary reactor
US815384022 Feb 201010 Abr 2012Grupo Petrotemex, S.A. de C.V.Oxidation system with sidedraw secondary reactor
US821122431 Oct 20073 Jul 2012Sun Chemical Corp.Multi-colored lustrous pearlescent pigments and process for making
US822153631 Oct 200717 Jul 2012Sun Chemical Corp.Cosmetic comprising multi-colored lustrous pearlescent pigments

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