Seiichiro Ohtsuka

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Tomioka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for recharging of silicon granules in a czochralski singl...
- Patent number 5,868,835
- Issue date Feb 9, 1999
- Shin-Etsu Handotai Co., Ltd.
- Naoki Nagai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method for recharging of silicon granules in a Czochralski single c...
- Patent number 5,690,733
- Issue date Nov 25, 1997
- Shin-Etsu Handotai Co., Ltd.
- Naoki Nagai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method for controlling specific resistance of single crystal and an...
- Patent number 5,129,986
- Issue date Jul 14, 1992
- Shin-Etsu Handotai Co., Ltd.
- Hidetoshi Seki
- C30 - CRYSTAL GROWTH
Information Patent Grant
Apparatus for producing Czochralski-grown single crystals
- Patent number 5,106,593
- Issue date Apr 21, 1992
- Shin-Etsu Handotai Co., Ltd.
- Koji Mizuishi
- C30 - CRYSTAL GROWTH
Information Patent Grant
Wire vibration prevention mechanism for a single crystal pulling ap...
- Patent number 5,089,239
- Issue date Feb 18, 1992
- Shin-Etsu Handotai Company Limited
- Koji Mizuishi
- C30 - CRYSTAL GROWTH