Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7672050 | Refractive index controlled diffractive optical element and its manufacturing method | Daisuke Shibata, Takayuki NAKAYA, Hidetoshi Takeda, Toshiro Kotaki | 2010-03-02 |