Michael Salmen

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Munich, DE

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Patents Grantslast 30 patents

Information Patent Grant
Boron addition for making potassium-doped tungsten
- Patent number 6,478,845
- Issue date Nov 12, 2002
- Osram Sylvania Inc.
- Hans-Joachim Lunk
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of making non-sag tungsten wire for electric lamps
- Patent number 6,165,412
- Issue date Dec 26, 2000
- Osram Sylvania Inc.
- Hans-Joachim Lunk
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method of manufacturing a non-sag tungsten wire for electric lamps
- Patent number 5,795,366
- Issue date Aug 18, 1998
- Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen mbH
- Michael Salmen
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Process of making a non-sag tungsten wire for electric lamps
- Patent number 5,785,731
- Issue date Jul 28, 1998
- Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
- Martin Fait
- B22 - CASTING POWDER METALLURGY