Per Harald Collin

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Falun, SE

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Patents Grantslast 30 patents

Information Patent Grant
Process for removing sulphur from crude iron
- Patent number 4,205,980
- Issue date Jun 3, 1980
- Stora Kopparbergs Bergslags Aktiebolag
- Per H. Collin
- C21 - METALLURGY OF IRON
Information Patent Grant
Iron oxide melt reduction furnace and method
- Patent number 4,181,812
- Issue date Jan 1, 1980
- Asea Aktiebolag
- Per H. Collin
- C21 - METALLURGY OF IRON
Information Patent Grant
Method for direct manufacture of crude steel
- Patent number 4,131,452
- Issue date Dec 26, 1978
- Stora Kopparbergs Bergslags AB
- Per H. Collin
- C21 - METALLURGY OF IRON
Information Patent Grant
Method for reduction in a fluid bed of fine grained material contai...
- Patent number 4,098,604
- Issue date Jul 4, 1978
- Stora Kopparberg Bergslags Aktiebolag
- Per Harald Collin
- C21 - METALLURGY OF IRON