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https://drivepatents.com/patents/1089272 · 3 Mar 2004
Catalyst comprises a multilayered catalyst composition (2) applied onto a support body (1) and consisting of a lower catalyst layer (3) directly lying on the support body and an upper catalyst layer (4) lying on the lower catalyst layer. The lower catalyst...
https://drivepatents.com/patents/1089482 · 25 Feb 2004
A lean burn automotive exhaust system has a nitric oxide storage catalytic converter from which accumulated nitric oxide and sulphur oxides. The removal of sulphur is preceded by an increase in the catalytic temperature under lean burn conditions to that p...
https://drivepatents.com/patents/1089887 · 4 Feb 2004
The invention relates to the field of electrochemical cells and fuel cells, more specifically to polymer-electrolyte-membrane (PEM) fuel cells and describes a process for the manufacture of catalyst-coated substrates for membrane fuel cells. The catalyst-c...
https://drivepatents.com/patents/1089805 · 4 Feb 2004
The present invention relates to water-based catalyst inks and their use for manufacture of catalyst-coated substrates. The catalyst layer is applied to the hydrophobic surface of a substrate by using a water-based catalyst ink comprising an electrocatalys...
https://drivepatents.com/patents/1089888 · 4 Feb 2004
The present invention provides a process and a device for regeneration of a nitrogen oxides storage catalyst arranged in the exhaust system of a diesel engine. The process comprises a first and a second regeneration strategy wherein the first regeneration ...
https://drivepatents.com/patents/1091306 · 10 Dec 2003
The invention relates to the field of electrochemical cells and fuel cells, more specifically to polymer-electrolyte-membrane (PEM) fuel cells and describes a process for the manufacture of membrane-electrode-assemblies (MEAs) containing five layers. The f...
https://drivepatents.com/patents/1091555 · 26 Nov 2003
The invention relates to the field of electrochemical cells and fuel cells, more specifically to membrane fuel cells such as polymer-electrolyte-membrane fuel cells (PEMFC) and DMFC and describes a continuous process for the manufacture of gas diffusion la...