Reinhold Gradl

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Rueckersdorf, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for vacuum-tight sealing of a ceramic tube
- Patent number 4,892,498
- Issue date Jan 9, 1990
- Hoechst CeramTec Aktiengesellschaft
- Reinhold Gradl
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Polycrystalline, translucent sintered tubes
- Patent number 4,725,467
- Issue date Feb 16, 1988
- Hoechst CeramTec Aktiengesellschaft
- Heinrich Groh
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Process for producing polycrystalline, translucent sintered tubes
- Patent number 4,629,593
- Issue date Dec 16, 1986
- Hoechst CeramTec Aktiengesellschaft
- Heinrich Groh
- B28 - WORKING CEMENT, CLAY, OR STONE