Osamu Takeda

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Manganese-zinc system ferrite
- Patent number 5,980,773
- Issue date Nov 9, 1999
- TDK Corporation
- Osamu Takeda
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Ferrite and ferrite core for power supply
- Patent number 5,846,448
- Issue date Dec 8, 1998
- TDK Corporation
- Katsushi Yasuhara
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES