Masashi Hasegawa

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Kanagawa, JA

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Patents Grantslast 30 patents

Information Patent Grant
Solid diffusion dopants for semiconductors and method of making the...
- Patent number 4,033,790
- Issue date Jul 5, 1977
- Denki Kagaku Kogyo Kabushiki Kaisha
- Koreaki Gunjigake
- C30 - CRYSTAL GROWTH
Information Patent Grant
Composition for diffusing phosphorus
- Patent number 4,025,464
- Issue date May 24, 1977
- Mitsuo Yamashita
- C30 - CRYSTAL GROWTH
Information Patent Grant
Composition for diffusing phosphorus
- Patent number 3,972,838
- Issue date Aug 3, 1976
- Denki Kagaku Kogyo Kabushiki Kaisha
- Mitsuo Yamashita
- C30 - CRYSTAL GROWTH
Information Patent Grant
Composition for diffusing phosphorus
- Patent number 3,931,039
- Issue date Jan 6, 1976
- Denki Kagaku Kogyo Kabushiki Kaisha
- Mitsuo Yamashita
- C30 - CRYSTAL GROWTH