Yumiko Hirano

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Niigata-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process of producing silicon wafer
- Patent number 7,291,220
- Issue date Nov 6, 2007
- Covalent Materials Corporation
- Yumiko Hirano
- C30 - CRYSTAL GROWTH
Information Patent Grant
Method of fabricating a single crystal ingot and method of fabricat...
- Patent number 6,517,632
- Issue date Feb 11, 2003
- Toshiba Ceramics Co., Ltd.
- Toshirou Minami
- C30 - CRYSTAL GROWTH

Patents Applicationslast 30 patents

Information Patent Application
Method of manufacturing silicon wafer
- Publication number 20070068447
- Publication date Mar 29, 2007
- TOSHIBA CERAMICS CO., LTD.
- Koji Izunome
- C30 - CRYSTAL GROWTH
Information Patent Application
Process of producing silicon wafer
- Publication number 20060060129
- Publication date Mar 23, 2006
- TOSHIBA CERAMICS CO., LTD.
- Yumiko Hirano
- C30 - CRYSTAL GROWTH
Information Patent Application
Method of fabricating a single crystal ingot and method of fabricat...
- Publication number 20010029883
- Publication date Oct 18, 2001
- Toshirou Minami
- C30 - CRYSTAL GROWTH