Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7584150 | Recording method, recording medium, and recording system | Akemi Hirotsune, Harukazu Miyamoto | 2009-09-01 |
| 7102987 | Optical recording medium having unreadable restricted block(s), and systems incorporating same | Akeimi Hirotsune, Harukazu Miyamoto | 2006-09-05 |
| 7102988 | Optical recording medium having inaccessible restricted block(s), and systems incorporating same | Akeimi Hirotsune, Harukazu Miyamoto | 2006-09-05 |
| 6788642 | Optical recording medium having unrecordable restricted block(s), and systems incorporating same | Akeimi Hirotsune, Harukazu Miyamoto | 2004-09-07 |
| 6532034 | Optical disk, optical disk apparatus, and method for writing figures | Akemi Hirotsune, Yumiko Anzai | 2003-03-11 |