Tomoyuki Ishiyama

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Okayama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hexagonal crystal ferrite magnetic powder for magnetic recording, m...
- Patent number 8,801,956
- Issue date Aug 12, 2014
- Dowa Electronics Materials Co., Ltd.
- Kenji Masada
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents

Information Patent Application
HEXAGONAL CRYSTAL FERRITE MAGNETIC POWDER FOR MAGNETIC RECORDING, M...
- Publication number 20120199782
- Publication date Aug 9, 2012
- DOWA ELECTRONICS MATERIALS CO., LTD.
- Kenji Masada
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES