Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6665472 | Optical filter having cascaded long-period gratings | Michiko Takushima, Masakazu Shigehara | 2003-12-16 |
| 6639700 | Hologram recording medium, hologram recording/reconstructing apparatus, and hologram recording/reconstructing method | — | 2003-10-28 |
| 6529254 | Optical element and method for manufacturing the same, and optical apparatus and method for manufacturing the same | — | 2003-03-04 |