MIDDELBURG STEEL & ALLOYS( PROPRIETARY) LIMITED

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SANDTON CITY, ZA

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Patents Grantslast 30 patents

Information Patent Grant
Hot working and heat treatment of corrosion resistant steels
- Patent number 4,986,857
- Issue date Jan 22, 1991
- Middelburg Steel and Alloys (Proprietary) Limited
- Jack Hewitt
- C21 - METALLURGY OF IRON
Information Patent Grant
Sulphur and silicon control in ferrochromium production
- Patent number 4,971,622
- Issue date Nov 20, 1990
- Middelburg Steel and Alloys (Proprietary) Limited
- Donovan D. Slatter
- C21 - METALLURGY OF IRON
Information Patent Grant
Production and treatment of ferrochromium
- Patent number 4,441,921
- Issue date Apr 10, 1984
- Council for Mineral Technology
- Thomas R. Curr
- C21 - METALLURGY OF IRON

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Trademarklast 30 trademarks

Information Trademark
73583865 - CROMWELD
- Serial number 73583865
- Registration number 1422513
- Filing date Feb 20, 1986
- MIDDELBURG STEEL & ALLOYS (PROPRIETARY)LIMITED
- 6 - Common metals and their alloys