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Helmut Hubert
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Wiesbaden, DE
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last 30 patents
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Patent Grant
Biogas reactor for the anaerobic treatment of waste water
Patent number
5,500,118
Issue date
Mar 19, 1996
Passavant-Werke AG
Hubert Coenen
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Patent Grant
Method for thermal disposal of sewage sludge
Patent number
5,190,672
Issue date
Mar 2, 1993
Passavant-Werke AG
Hubert Coenen
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL