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Sigfrid Michelfelder
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Gummersbach, DE
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last 30 patents
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Patent Grant
Apparatus for preheating combustion air, accompanied by simultaneou...
Patent number
4,903,755
Issue date
Feb 27, 1990
L. & C. Steinmuller GmbH
Sigfrid Michelfelder
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Apparatus for preheating combustion air, accompanied by simultaneou...
Patent number
4,739,826
Issue date
Apr 26, 1988
L. & C. Steinmuller GmbH
Sigfrid Michelfelder
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Apparatus for preheating combustion air, accompanied by simultaneou...
Patent number
4,602,673
Issue date
Jul 29, 1986
L. & C. Steinmuller GmbH
Sigfrid Michelfelder
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Burner
Patent number
4,551,090
Issue date
Nov 5, 1985
L. & C. Steinmuller GmbH
Klaus Leikert
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Method of minimizing the emission of contaminants from combustion p...
Patent number
4,469,033
Issue date
Sep 4, 1984
L. & C. Steinmuller GmbH
Sigfrid Michelfelder
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method of igniting a pulverized coal annular burner flame
Patent number
4,466,363
Issue date
Aug 21, 1984
L. & C. Steinmuller GmbH
Klaus Leikert
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Method of minimizing the emission of contaminants from flame combus...
Patent number
4,461,224
Issue date
Jul 24, 1984
L. & C. Steinmuller GmbH
Sigfrid Michelfelder
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method of introducing additive into a reaction gas flow
Patent number
4,440,100
Issue date
Apr 3, 1984
L. & C. Steinmuller GmbH
Sigfrid Michelfelder
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Burner for combustion of powdered fuels
Patent number
4,333,405
Issue date
Jun 8, 1982
L. & C. Steinmuller GmbH
Sigfrid Michelfelder
F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information
Patent Grant
Method of dry scrubbing reaction products resulting from flame burning
Patent number
4,331,638
Issue date
May 25, 1982
L. & C. Steinmuller GmbH
Sigfrid Michelfelder
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...