Erwin Walter

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D-6460 Gelnhausen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Activated carbon and process for its production
- Patent number 4,642,304
- Issue date Feb 10, 1987
- Degussa Aktiengesellschaft
- Alfons Karl
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for production of activated carbon from lignite coke
- Patent number 4,603,119
- Issue date Jul 29, 1986
- Alfons Karl
- C01 - INORGANIC CHEMISTRY