Tadashi Niwayama

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Gunma, JP

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Patents Grantslast 30 patents

Information Patent Grant
Cleaning method of crucible
- Patent number 5,885,365
- Issue date Mar 23, 1999
- Shin-Etsu Handotai Co., Ltd.
- Shiniti Sugai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Device for pulling silicon single crystal
- Patent number 5,394,829
- Issue date Mar 7, 1995
- Shin-Etsu Handotai Co., Ltd.
- Toshiharu Uesugi
- C30 - CRYSTAL GROWTH