Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673241 | Focus detection mechanism and optical head and optical storage device that use it | Masatoshi Yonekubo, Takashi Takeda, Toshio Arimura, Hidefumi Sakata, Osamu Yokoyama | 1997-09-30 |
| 5663824 | Optical modulators as monolithically integrated optical isolators | Thomas L. Koch, Kang-Yih Liou | 1997-09-02 |