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Manfred Durr
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Oelde, DE
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last 30 patents
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Patent Grant
Method and apparatus for the heat treatment of fine-grained material
Patent number
4,941,821
Issue date
Jul 17, 1990
Krupp Polysius AG
Manfred Durr
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Apparatus and method for the heat treatment of fine-grained material
Patent number
4,861,265
Issue date
Aug 29, 1989
Krupp Polysius AG
Manfred Durr
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Method and apparatus for the heat treatment of fine-grained material
Patent number
4,808,108
Issue date
Feb 28, 1989
Krupp Polysius AG
Peter Tiggesbaumker
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Apparatus for cooling hot material
Patent number
4,732,561
Issue date
Mar 22, 1988
Krupp Polysius AG
Karl Eiring
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Apparatus for the heat treatment of fine material
Patent number
4,720,262
Issue date
Jan 19, 1988
Krupp Polysius AG
Manfred Durr
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Cyclone construction
Patent number
4,662,909
Issue date
May 5, 1987
Krupp Polysius AG
Manfred J. Durr
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Grate cooler and method of cooling
Patent number
4,592,724
Issue date
Jun 3, 1986
Krupp Polysius AG
Manfred Durr
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Process for the heat-treatment of fine-grained material
Patent number
4,300,879
Issue date
Nov 17, 1981
Krupp Polysius AG
Wolf Goldmann
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES