Derek Roy Oldnall

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Pretoria, ZA

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Patents Grantslast 30 patents

Information Patent Grant
Method for the commercial production of iron
- Patent number 9,150,939
- Issue date Oct 6, 2015
- Iron Mineral Beneficiation Services (Proprietary) Limited
- Gerard Pretorius
- C21 - METALLURGY OF IRON
Information Patent Grant
Method for the commercial production of iron
- Patent number 8,613,787
- Issue date Dec 24, 2013
- Iron Mineral Beneficiation Services (Proprietary) Limited
- Gerard Pretorius
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
Method for the Commercial Production of Iron
- Publication number 20140033869
- Publication date Feb 6, 2014
- IRON MINERAL BENEFICIATION SERVICES (PROPRIETARY) LIMITED
- Gerard Pretorius
- C21 - METALLURGY OF IRON
Information Patent Application
METHOD FOR THE COMMERCIAL PRODUCTION OF IRON
- Publication number 20090260483
- Publication date Oct 22, 2009
- Iron Mineral Benefication Ser4vices (Proprietary) Limited
- Gerard Pretorius
- C21 - METALLURGY OF IRON