Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5080507 | Optical wavelength converting method | Yoji Okazaki, Koji Kamiyama | 1992-01-14 |
| 5031999 | Optical wavelength converter device | Chiaki Goto | 1991-07-16 |
| 5013129 | Optical wavelength converter device and method of manufacturing same | Yoji Okazaki | 1991-05-07 |
| 4991931 | Method of driving optical wavelength converter module | Yoji Okazaki, Hiroshi Sunagawa | 1991-02-12 |
| 4952013 | Optical wavelength converter device | Yoji Okazaki, Koji Kamiyama, Shinsuke Umegaki | 1990-08-28 |
| 4909596 | Optical wavelength converter module | Yoji Okazaki, Koji Kamiyama, Takayuki Katoh | 1990-03-20 |
| 4909595 | Optical wavelength conversion method and optical wavelength converter module | Yoji Okazaki, Koji Kamiyama, Takayuki Katoh | 1990-03-20 |