Alfons Kreher

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Frankfurt, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process and apparatus for granulating powdery materials
- Patent number 4,807,819
- Issue date Feb 28, 1989
- Degussa Aktiengesellschaft
- Alfons Kreher
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the production of mixed granulate from carbon black and...
- Patent number 4,430,280
- Issue date Feb 7, 1984
- Degussa Aktiengesellschaft
- Alfons Kreher
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Precipitated silicic acid granules
- Patent number 4,179,431
- Issue date Dec 18, 1979
- Deutsche Gold-und Silber-Scheideanstalt vormals Rosseler
- Eberhard Kilian
- C01 - INORGANIC CHEMISTRY