Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7492975 | Optical switch, optical modulator and wavelength variable filter | Seiji Toyoda, Kazuo Fujiura, Masahiro Sasaura, Koji Enbutsu, Makoto Shimokozono +4 more | 2009-02-17 |
| 7356227 | Optical switch, optical modulator and wavelength variable filter | Seiji Toyoda, Kazuo Fujiura, Masahiro Sasaura, Koji Enbutsu, Makoto Shimokozono +4 more | 2008-04-08 |
| 7340116 | Optical switch, optical modulator and wavelength variable filter | Seiji Toyoda, Kazuo Fujiura, Masahiro Sasaura, Koji Enbutsu, Makoto Shimokozono +4 more | 2008-03-04 |
| 7336854 | Optical switch, optical modulator and wavelength variable filter | Seiji Toyoda, Kazuo Fujiura, Masahiro Sasaura, Koji Enbutsu, Makoto Shimokozono +4 more | 2008-02-26 |