Hendrik Kathrein

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Juchen-Aldenhoven, DE

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Patents Grantslast 30 patents

Information Patent Grant
Low coercive iron oxide pigments and a process for their preparation
- Patent number 5,480,570
- Issue date Jan 2, 1996
- Toda Kogyo Corp.
- Karl-Heinz van Bonn
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of magnetic iron oxides and the pigment...
- Patent number 5,116,419
- Issue date May 26, 1992
- Hendrik Kathrein
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Magnetic iron oxide pigments and a process for their preparation
- Patent number 4,933,014
- Issue date Jun 12, 1990
- Bayer Aktiengeselschaft
- Hendrik Kathrein
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic iron oxide pigments and a process for their preparation
- Patent number 4,923,519
- Issue date May 8, 1990
- Bayer Aktiengesellschaft
- Fritz Rodi
- G11 - INFORMATION STORAGE