Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5303224 | Optical pickup, optical information recording carrier and recording and reproducing apparatus thereof | Kiyofumi Chikuma | 1994-04-12 |
| 5278930 | Fiber type wavelength converter | Kiyofumi Chikuma | 1994-01-11 |