Hans-Joachim Retelsdorf

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Weiherhof, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method of recovering vanadium from vanadium-containing materials wi...
- Patent number 4,748,009
- Issue date May 31, 1988
- GfE Gesellschaft fur Elektrometallurgie mbH
- Reinhard Hahn
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of making a titanium-containing hydrogen storage alloy
- Patent number 4,643,874
- Issue date Feb 17, 1987
- GfE Gesellschaft fur Elektrometallurgie mbH
- Rudolf Fichte
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Carbothermal method of producing cobalt-boron and/or nickel-boron
- Patent number 4,623,386
- Issue date Nov 18, 1986
- GfE Gesellschaft fur Elektrometallurgie mbH
- Reinhard Hahn
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of making ferroboron and ferroborosilicon alloys and the all...
- Patent number 4,569,691
- Issue date Feb 11, 1986
- GfE Gesellschaft fur Elektrometallurgie mbH
- Rudolf Fichte
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Sinterable mass for producing workpieces of alloy steel
- Patent number 4,263,046
- Issue date Apr 21, 1981
- GfE Gesellschaft fur Elektrometallurgie mit beschrankter Haftung
- Rudolf Fichte
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...