Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829212 | High density optical disk and a method of high density recording | Seiji Morita | 2004-12-07 |
| 6822938 | Optical disk having lands and grooves with a reduced track pitch | Hiroyuki Matsumoto, Seiji Morita, Masatoshi Hayashi | 2004-11-23 |
| 5793723 | Method and a system for adjusting optical recording device involving an optical recording medium of non-uniform heat characteristics | Toshihiro Okuyama, Haruhisa Iida | 1998-08-11 |