Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10689289 | Optical glass, preform, and optical element | Atsushi Nagaoka | 2020-06-23 |
| 10370289 | Optical glass, preform, and optical element | Atsushi Nagaoka | 2019-08-06 |
| 10189740 | Optical glass, preform, and optical element | Atsushi Nagaoka | 2019-01-29 |