Gerardus P. Buhrmann

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Velsen-Zuid, NL

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Patents Grantslast 30 patents

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
Gas-transmitting wall element for a metallurgical vessel, a metallu...
- Patent number 4,535,975
- Issue date Aug 20, 1985
- Hoogovens Groep B.V.
- Gerardus P. Buhrmann
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method of producing steel by the LD process
- Patent number 4,465,514
- Issue date Aug 14, 1984
- Hoogovens Groep B.V.
- Gerardus P. Buhrmann
- B22 - CASTING POWDER METALLURGY
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
Information Patent Grant
Liquid-cooled lance for blowing oxygen onto a steel bath
- Patent number 4,427,186
- Issue date Jan 24, 1984
- Estel Hoogovens BV
- Gerardus P. Buhrmann
- C21 - METALLURGY OF IRON