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Felix Schmidt, Wilfried Baumgartner, Reinhard Manner, Gerhard Birtigh, Ewald Dittrich: Method of coating honeycomb bodies with finely divided solid matter. Degussa Aktiengesellschaft, Beveridge DeGrandi & Weilacher, November 24, 1992: US05165970 (25 worldwide citation)

A method for the uniform coating of honeycomb bodies with finely divided solid matter from a dispersion in an amount which is below that which arises during customary immersion. To this end, the honeycomb is flooded from below with dispersion, emptied after a dwell time and blown out. Filling time, ...


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Rainer Domesle, Bernd Engler, Felix Schmidt, Peter Schubert, Edgar Koberstein: Catalyst for purifying the exhaust gases of internal combustion engines and method for making the catalyst. Degussa, Beveridge DeGrandi & Weilacher, January 12, 1993: US05179059 (24 worldwide citation)

A catalyst for purifying the exhaust gases of internal combustion engines with improved light-off behavior and improved durability with reduced specific noble-metal content is disclosed which uses active aluminum oxide provided with customary promoters as carrier and platinum and/or palladium and rh ...


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Edmund Fehn, Felix Schmidt, Joerg Plessow: Process and device for defined impregnation of honeycomb structures with parallel flow channels. Degussa Aktiengesellschaft, Beveridge DeGrandi Weilacher & Young L, August 6, 1996: US05543181 (11 worldwide citation)

A process is described for defined impregnation of honeycomb structures and a device for performing the process. The impregnating solutions are sprayed directly into the flow channels in the honeycomb structure using hollow injector needles.


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Felix Schmidt, Bernd Mergner, Rainer Domesle: Method of improving the thermal shock behavior of monolithic catalysts. Degussa Aktiengesellschaft, Beveridge DeGrandi & Weilacher, August 18, 1992: US05139993 (8 worldwide citation)

The thermal shock resistance of monolithic catalysts is improved by pre-coating a ceramic monolithic carrier, before the application of catalytic components, with an organic filling material which can be melted and burned out and which comprises a dispersion of very fine solid particles, by heating ...


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Ewald Dittrich, Reinhard Manner, Gerhard Birtigh, Felix Schmidt: Method for removing washcoat remaining in the channels of freshly coated monolithic or honeycombed catalyst carriers. Degussa, Beveridge DeGrandi & Weilacher, July 7, 1992: US05127960 (6 worldwide citation)

An apparatus and a method are disclosed for the removal and the recovery of washcoat remaining in the channels of freshly coated monolithic or honeycombed catalytic carriers. The carrier is inserted into a chamber from above and tightly fitted therein at least with the lowest part of the carrier the ...


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Ewald Dittrich, Reinhard Manner, Gerhard Birtigh, Felix Schmidt: Apparatus and method for removing washcoat remaining in the channels of freshly coated monolithic or honeycombed catalyst carriers and use of the apparatus. Degussa Aktiengesellschaft, Beveridge DeGrandi & Weilacher, December 10, 1991: US05070893 (3 worldwide citation)

An apparatus and a method are disclosed for the removal and the recovery of washcoat remaining in the channels of freshly coated monolithic or honeycombed catalytic carriers. The carrier is inserted into a chamber from above and tightly fitted therein at least with the lowest part of the carrier the ...


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