Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6522809 | Waveguide grating device and method of controlling Bragg wavelength of waveguide grating | Masakazu Takabayashi, Kiichi Yoshiara, Sadayuki Matsumoto, Junichiro Hoshizaki, Hajime Takeya +3 more | 2003-02-18 |