Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5132843 | Grating lens and focusing grating coupler | Shigeru Aoyama, Masami Tada, Hayami Hosokawa, Noriyoshi Horie | 1992-07-21 |
| 5122903 | Optical device and optical pickup device using the same | Shigeru Aoyama, Tatsuo Ohgaki | 1992-06-16 |