Yoshizawa; Ken
Patent Applications and Registrations
Patent applications and USPTO patent grants for Yoshizawa; Ken.The latest application filed is for "method for producincg silicon wafer and silicon wafer".
- Yoshizawa; Ken - Niigata JP
- Yoshizawa; Ken - Tochigi-ken JP
- Yoshizawa; Ken - Annaka JP
- Yoshizawa; Ken - Ibaragi JP
| Patent | Date |
|---|---|
| Method for producing silicon wafer and silicon wafer Grant 7,361,219 - Yoshizawa April 22, 2 | 2008-04-22 |
| Method for producincg silicon wafer and silicon wafer App 20060174820 - Yoshizawa; Ken | 2006-08-10 |
| Magnetic recording medium Grant 5,993,948 - Yamazaki , et al. November 30, 1 | 1999-11-30 |
| High-frequency induction heater and method of producing semiconductor single crystal using the same Grant 5,792,258 - Kimura , et al. August 11, 1 | 1998-08-11 |
| Optical recording disc Grant 4,710,913 - Matsushima , et al. December 1, 1 | 1987-12-01 |
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