Hans Schaefer

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Hanau, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process & apparatus for the production of hydrogen cyanide
- Patent number 4,853,190
- Issue date Aug 1, 1989
- Degussa AG
- Reinhard Manner
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process and apparatus for the production of hydrogen cyanide
- Patent number 4,594,234
- Issue date Jun 10, 1986
- Degussa Aktiengesellschaft
- Reinhard Manner
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Iron blue pigment, process for making the same and use
- Patent number 4,378,995
- Issue date Apr 5, 1983
- Degussa Aktiengesellschaft
- Everhard Gratzfeld
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Iron blue pigment, process for making the same and use
- Patent number 4,368,075
- Issue date Jan 11, 1983
- Degussa Aktiengesellschaft
- Everhard Gratzfeld
- C01 - INORGANIC CHEMISTRY