Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6876792 | Phase mask for forming diffraction grating, and optical fiber and optical waveguide having diffraction grating duplicated using the phase mask | Masaaki Kurihara, Tetsuro Komukai, Tetsuro Inui | 2005-04-05 |