Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11150395 | Light guide and light emitting device | — | 2021-10-19 |
| 11119330 | Reticle, reticle unit, rifle scope, and optical apparatus | Jun Kawakami, Katsunori Tomita, Yasuaki Ishikawa, Satoru Okazaki | 2021-09-14 |
| 11041760 | Optical measurement device and optical measurement method | Manabu Shiozawa, Masataka Shirai | 2021-06-22 |
| 10942483 | Image forming apparatus | — | 2021-03-09 |