Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6643431 | Optical device and control method thereof | Chisai Hirose, Masayuki Nishimura, Makoto Katayama | 2003-11-04 |
| 6633698 | Optical filter | Masayuki Nishimura | 2003-10-14 |
| 6560381 | Optical filter | Masayuki Nishimura, Chisai Hirose | 2003-05-06 |
| 6507680 | Planar lightwave circuit module | Masayuki Nishimura, Nobuhiro Akasaka | 2003-01-14 |