Oya; Keiji
Patent Applications and Registrations
Patent applications and USPTO patent grants for Oya; Keiji.The latest application filed is for "optical recording medium and optical recording-reproducing method using thereof".
- Oya; Keiji - Saitama JP
- Oya, Keiji - Saitama-Ken JP
| Patent | Date |
|---|---|
| Optical recording medium and optical recording-reproducing method using thereof Grant 8,029,976 - Wada , et al. October 4, 2 | 2011-10-04 |
| Optical recording medium Grant 7,316,836 - Wada , et al. January 8, 2 | 2008-01-08 |
| Optical recording medium and optical recording-reproducing method using thereof App 20060110566 - Wada; Yutaka ; et al. | 2006-05-25 |
| Optical recording medium App 20050094548 - Wada, Yutaka ; et al. | 2005-05-05 |
| Optical recording material App 20030224293 - Oya, Keiji ; et al. | 2003-12-04 |
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