Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6741379 | Optical module having element for optical phase shift using electro-optic effect | Yoshihiko Kaitoh, Tetsuo Ishizaka | 2004-05-25 |
| 6678428 | Optical modulator | Minoru Seino, Tetsuo Ishizaka, Masaharu Doi, Tadao Nakazawa | 2004-01-13 |