Hannes Vallak

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Geneva, CH

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Patents Grantslast 30 patents

Information Patent Grant
Process for thermal insulation of the surface of a molten mass of s...
- Patent number 4,600,560
- Issue date Jul 15, 1986
- International Ferrox Co., Establishment
- Hannes Vallak
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Ingot mould having a hot-top inside the upper part of the mould
- Patent number 4,515,341
- Issue date May 7, 1985
- International Ferrox Co., Establishment
- Enn Vallak
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method for removing heat-insulating material from an ingot mold bef...
- Patent number 4,016,002
- Issue date Apr 5, 1977
- Vallak; Enn
- Hannes Vallak
- B22 - CASTING POWDER METALLURGY