Ralf Eck

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Patents Grantslast 30 patents

Information Patent Grant
Chromium-based alloy
- Patent number 5,608,174
- Issue date Mar 4, 1997
- Ralf Eck
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Material for the metal components of high-temperature fuel cell sys...
- Patent number 5,407,758
- Issue date Apr 18, 1995
- Siemens Aktiengesellschaft
- Horst Greiner
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for manufacturing semi-finished products from sintered refr...
- Patent number 5,102,474
- Issue date Apr 7, 1992
- Schwarzkopf Technologies Corporation
- Ralf Eck
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Process for the manufacture of semi-finished products or preformed...
- Patent number 5,051,139
- Issue date Sep 24, 1991
- Schwarzkopf Development Corporation
- Ralf Eck
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Creep-resistant alloy of high-melting metal and process for produci...
- Patent number 4,950,327
- Issue date Aug 21, 1990
- Schwarzkopf Development Corporation
- Ralf Eck
- B22 - CASTING POWDER METALLURGY