Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6804437 | Diffraction grating device manufacturing method, diffraction grating device manufacturing apparatus, and diffraction grating device | Kiyotaka Murashima, Ken Hashimoto, Akira Inoue, Masaki Ohmura, Masakazu Shigehara | 2004-10-12 |