Abstract: There is disclosed a catalytic waste gas converter for internal combustion engines of various types in which there is used as carrier for the catalyst a carrier matrix made of a steel screen arranged in a housing holder. There are employed special flow guides made of spirally wound steel matrices for the various flow through possibilities favorable to conversion of the waste gas to be purified.

Abstract: There is disclosed a catalytic waste gas converter for internal combustion engines of various types in which there is used as carrier for the catalyst a carrier matrix made of a steel screen arranged in a housing holder. There are employed special flow guides made of spirally wound steel matrices for the various flow through possibilities favorable to conversion of the waste gas to be purified.

Abstract: An improved carrier matrix for catalysts is described wherein layers are disposed one on top of the other consisting of highly temperature resistant and non-scaling steel formed into a smooth screen into which closed hollow or open supporting profiles of a larger cross section than the screen are woven in or on at parallel distances. Layers of screens provided with profiles may be combined with layers of flat screens or smooth or corrugated sheet metal. The carrier matrix may be coated with a catalytically active carrier such as gamma-aluminum oxide and then receive a coating of a catalytically active metal whereby the resulting product may be used to treat auto exhaust gases for purification.

Abstract: Monolithic carrier matrixes are formed from high grade steel, consisting of alternating smooth and corrugated layers of sheet metal and/or screen cloth, which may be combined with layers of smooth screen cloth or of smooth or corrugated sheet metal, wherein the layers may be coated on their surfaces with a catalysis-promoting carrier material. These carrier matrixes may be used to produce catalysts for the purification of exhaust gases.