Takashi Yokoyama

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for manufacturing defect-free silicon single crystal
- Patent number 7,524,371
- Issue date Apr 28, 2009
- Sumco Techxiv Corporation
- Takashi Yokoyama
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Method for manufacturing silicon single crystals and wafers adapted...
- Patent number 6,179,910
- Issue date Jan 30, 2001
- Komatsu Electronic Metals Co., LTD
- Takashi Yokoyama
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method of fabricating a silicon single crystal
- Patent number 6,030,450
- Issue date Feb 29, 2000
- Komatsu Electronic Metals Co., Ltd.
- Toshiaki Saishouji
- C30 - CRYSTAL GROWTH

Patents Applicationslast 30 patents

Information Patent Application
Method for manufacturing a silicon single crystal
- Publication number 20070240629
- Publication date Oct 18, 2007
- Sumco Techxiv Corporation
- Toshirou Kotooka
- C30 - CRYSTAL GROWTH
Information Patent Application
Silicon wafer, its manufacturing method, and its manufacturing appa...
- Publication number 20060016387
- Publication date Jan 26, 2006
- Takashi Yokoyama
- C30 - CRYSTAL GROWTH