Susumu Hirooka

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Takasaki, JP

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Patents Grantslast 30 patents

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Semiconductive ceramic materials with a voltage-dependent nonlinear...
- Patent number 4,547,314
- Issue date Oct 15, 1985
- Taiyo Yuden Co., Ltd.
- Masaru Masuyama
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Ceramic materials with a voltage-dependent nonlinear resistance
- Patent number 4,545,929
- Issue date Oct 8, 1985
- Taiyo Yuden Co., Ltd.
- Masaru Masuyama
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Semiconductive ceramic materials with a voltage-dependent nonlinear...
- Patent number 4,490,318
- Issue date Dec 25, 1984
- Taiyo Yuden Co., Ltd.
- Masaru Masuyama
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Semiconductive ceramic materials with a voltage-dependent nonlinear...
- Patent number 4,438,214
- Issue date Mar 20, 1984
- Taiyo Yuden Co., Ltd.
- Masaru Masuyama
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES