Johannes Greefkes

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Beverwijk, NL

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Patents Grantslast 30 patents

Information Patent Grant
Method for upgrading waste material comprising sheet metal with a z...
- Patent number 5,980,725
- Issue date Nov 9, 1999
- Compagnie Europeenne de Dezingage
- Bernard Campenon
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method and apparatus for treating a flow of gas containing oxidized...
- Patent number 5,609,841
- Issue date Mar 11, 1997
- Hoogovens Staal, B.V.
- Johannes Greefkes
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the removal of sulfur oxide constituents from a waste gas
- Patent number 5,225,176
- Issue date Jul 6, 1993
- Hoogovens Groep B.V.
- Johannes Greefkes
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL