William Wells

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Sao Paulo, BR

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Patents Grantslast 30 patents

Information Patent Grant
Process for feeding heat energy into a molten metal bath
- Patent number 4,881,972
- Issue date Nov 21, 1989
- Kortec AG
- Ralph G. Weber
- C21 - METALLURGY OF IRON
Information Patent Grant
Closure apparatus for a tap hole
- Patent number 4,736,930
- Issue date Apr 12, 1988
- Kortec AG
- Ralph Weber
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Apparatus for heating charging material
- Patent number 4,687,440
- Issue date Aug 18, 1987
- Kortec AG
- William Wells
- C21 - METALLURGY OF IRON