Volker Hahnkamm

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Krefeld, DT

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic pigments with improved orientability and a process for the...
- Patent number 4,014,710
- Issue date Mar 29, 1977
- Bayer Aktiengesellschaft
- Peter Woditsch
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Magnetic iron oxides with improved orientability and a process for...
- Patent number 3,931,025
- Issue date Jan 6, 1976
- Bayer Aktiengesellschaft
- Peter Woditsch
- C01 - INORGANIC CHEMISTRY