Hartmut Kruner

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Eppstein/Taunus, DE

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Patents Grantslast 30 patents

Information Patent Grant
Al.sub.2 O.sub.3 and Y.sub.2 O.sub.3 containing silicon nitride hav...
- Patent number 5,720,919
- Issue date Feb 24, 1998
- Hoechst Aktiengesellschaft
- Cornelia Boberski
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Process for producing densely sintered silicon nitride components
- Patent number 5,656,219
- Issue date Aug 12, 1997
- Hoechst Aktiengesellschaft
- Gunter Riedel
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
High temperature resistant silicon nitride ceramic
- Patent number 5,556,815
- Issue date Sep 17, 1996
- Hoechst Aktiengesellschaft
- Cornelia Boberski
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES