Naoko Kashiwaya

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Fuji, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic material containing rare earth element, iron, nitrogen, hy...
- Patent number 5,164,104
- Issue date Nov 17, 1992
- Asahi Kasei Kogyo Kabushiki Kaisha
- Kurima Kobayashi
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES