Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7978426 | Prism and optical device | Tomokazu Tokunaga, Eiichi Nagaoka | 2011-07-12 |
| 7897532 | Optical glass composition, preform and optical element | Kazuhiko Ishimaru, Shoji Nakamura | 2011-03-01 |
| 7897533 | Optical glass composition, preform and optical element | Kazuhiko Ishimaru, Shoji Nakamura | 2011-03-01 |