Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11112728 | Structure for selectively locking toner inlet shutter of toner refill portion based on rotational phase of toner refill cartridge | Woong-Yong Choi | 2021-09-07 |
| D907698 | Development cartridge for a printer | Ji-Won Moon, Seung-gweon Lee, Woong-Yong Choi, Yongil Moon, Yongnam Ahn +5 more | 2021-01-12 |