Leif Erik Ingmar Hummelstedt

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Turku, FI

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Patents Grantslast 30 patents

Information Patent Grant
Extractrion process for removing and recovering metals from aqueous...
- Patent number 5,118,478
- Issue date Jun 2, 1992
- Outokumpu Oy
- Bror G. Nyman
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Extraction process for removing and recovering metals from aqueous...
- Patent number 4,818,503
- Issue date Apr 4, 1989
- Outokumpu Oy
- Bror G. Nyman
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Extraction agent composition
- Patent number 4,120,817
- Issue date Oct 17, 1978
- Outokumpu Oy
- Leif Erik Ingmar Hummelstedt
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...