Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4685763 | Light modulation device | Kunio Tada, Yoshikazu Nishiwaki | 1987-08-11 |
| 4673241 | Diffraction gratings and optical branching filter elements | Yoshikazu Nishiwaki, Kenji Okamoto | 1987-06-16 |
| 4560249 | Method of forming diffraction gratings and optical branching filter elements produced thereby | Yoshikazu Nishiwaki, Kenji Okamoto | 1985-12-24 |
| 4517280 | Process for fabricating integrated optics | Kenji Okamoto, Yoshikazu Nishiwaki, Yozo Nishiura | 1985-05-14 |