Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5835472 | Optical pickup device with substantially mutually orthogonal reflection surfaces | Tatsuo Ohgaki, Hayami Hosokawa, Masami Tada, Tsukasa Yamashita | 1998-11-10 |
| 5511142 | Rib optical waveguide and method of manufacturing the same | Hayami Hosokawa, Masami Tada, Tsukasa Yamashita, Tatsuo Ohgaki, Hironobu Kiyomoto | 1996-04-23 |
| 5138687 | Rib optical waveguide and method of manufacturing the same | Hayami Hosokawa, Masami Tada, Tsukasa Yamashita, Tatsuo Ohgaki, Hironobu Kiyomoto | 1992-08-11 |
| 5132843 | Grating lens and focusing grating coupler | Shigeru Aoyama, Masami Tada, Hayami Hosokawa, Tukasa Yamashita | 1992-07-21 |