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Hermann Stein
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Durkheim, DE
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last 30 patents
Information
Patent Grant
Roller for roller-hearth furnaces
Patent number
5,441,407
Issue date
Aug 15, 1995
LOI Essen Industrieofenanlagen GmbH
Dietrich Stamm
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Insulated roller assembly for a roller furnace
Patent number
5,143,684
Issue date
Sep 1, 1992
Didier-Werke
Hermann Stein
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Process for cleaning an exhaust gas
Patent number
4,828,806
Issue date
May 9, 1989
Didier-Werke AG
Claus Flockenhaus
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Process for the production of catalysts for the reduction of nitrog...
Patent number
4,806,427
Issue date
Feb 21, 1989
Didier-Werke AG
Hermann Stein
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Cartridge for catalyst plates
Patent number
4,758,410
Issue date
Jul 19, 1988
Didier-Werke AG
Daniel Grimm
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Catalyst for the separation of nitrogen oxides from combustion exha...
Patent number
4,721,699
Issue date
Jan 26, 1988
Didier-Werke AG
Dietrich Wagener
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Process for the removal of nitrogen oxides and soot from exhaust ga...
Patent number
4,720,376
Issue date
Jan 19, 1988
Didier Engineering GmbH.
Karl H. Laue
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Catalyst for the selective reduction of nitrogen oxides in waste ga...
Patent number
4,695,559
Issue date
Sep 22, 1987
Didier-Werke AG
Dietrich Wagener
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Process and device for mounting porous ceramic material
Patent number
4,677,731
Issue date
Jul 7, 1987
Didier-Werke AG
Jurgen Sommerer
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Catalyst for removal of nitrogen oxides from exhaust gases
Patent number
4,672,052
Issue date
Jun 9, 1987
Didier-Werke AG
Dietrich Wagener
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Method for the reactivation of a catalyst used for removal of nitro...
Patent number
4,656,148
Issue date
Apr 7, 1987
Didier-Werke AG
Hans-Eugen Buhler
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Process for producing a plastic composition which can be processed...
Patent number
4,564,485
Issue date
Jan 14, 1986
Didier-Werke AG
Axel Eschner
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Process for producing granular, fire-resistant material
Patent number
4,436,680
Issue date
Mar 13, 1984
Didier-Werke AG
Axel Eschner
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES