Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11086255 | Image forming apparatus | Takashi Tsujimura, Hisashi Tsukijima | 2021-08-10 |
| 8866405 | Discharge-lamp lighting device | Yoshihisa Umezawa, Tomokazu Osato | 2014-10-21 |
| 8836227 | Lighting device | Yoshihisa Umezawa | 2014-09-16 |