Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6754144 | Optical information recording/reproducing apparatus | Toshimitsu Kaku, Hisataka Sugiyama | 2004-06-22 |
| 6728176 | Information recording method | Harukazu Miyamoto, Yoshio Suzuki, Motoyuki Suzuki, Hisataka Sugiyama, Hiroyuki Minemura +1 more | 2004-04-27 |