Pieter J. Kreijger

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Castricum, NL

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for the manufacture of hot-rolled steel
- Patent number 5,303,766
- Issue date Apr 19, 1994
- Hoogovens Groep B.V.
- Pieter J. Kreijger
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Liquid-cooled lance for blowing oxygen onto a steel bath and method...
- Patent number 4,643,403
- Issue date Feb 17, 1987
- Hoogovens Groep B.V.
- Gerardus P. Buhrmann
- C21 - METALLURGY OF IRON
Information Patent Grant
Process for producing steel in a converter from pig iron and ferrou...
- Patent number 4,443,252
- Issue date Apr 17, 1984
- Hoogovens Groep B.V.
- Pieter J. Kreijger
- C21 - METALLURGY OF IRON