Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5848050 | Optical disk having a continuous recording track formed of alternating land and groove revolutions | Masato Nagasawa, Kazuhiko Nakane, Tsuyoshi Katayama, Yoshinobu Ishida | 1998-12-08 |