Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6483955 | Diffraction grating device | Manabu Shiozaki, Masakazu Shigehara, Kiyotaka Murashima | 2002-11-19 |
| 6477308 | Optical waveguide devices and methods of fabricating the same | Tetsuya Hattori, Shigeru Semura | 2002-11-05 |