Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6636366 | Objective for optical disk, optical pickup, optical disk writer-reader, and optical disk reader | — | 2003-10-21 |
| 6636471 | Optical pick-up | Yuichi Hasegawa | 2003-10-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6636366 | Objective for optical disk, optical pickup, optical disk writer-reader, and optical disk reader | — | 2003-10-21 |
| 6636471 | Optical pick-up | Yuichi Hasegawa | 2003-10-21 |