Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12393138 | Toner refill cartridge having structure in which driving force is transmitted through toner outlet | Woongyong Choi, Junhui Kim | 2025-08-19 |
| 12282273 | Development device having rotatable wiper wiping optical surface of lens | Jongin Kim, Woongyong Choi, Shinhyup Kang | 2025-04-22 |
| 12271120 | Toner refill cartridge having pump for automatic toner refilling | Shinhyup Kang, Jinhwa Hong, Junhui Kim | 2025-04-08 |
| 11392058 | Toner refilling portion of development cartridge to provide feedback indicating inlet shutter position | Seung Il Kim, Jiwon Moon | 2022-07-19 |
| 11366407 | Structure to refill toner to development cartridge mounted in main body | Yong-Kwan Cho, Seung-gweon Lee, Jiwon Moon, Woongyong Choi, Yongil Moon +1 more | 2022-06-21 |
| 11204568 | Plunger locking structure in syringe type toner refill cartridge | Woongyong Choi | 2021-12-21 |
| D907698 | Development cartridge for a printer | Ji-Won Moon, Seung-gweon Lee, Woong-Yong Choi, Yong-Kwan Cho, Yongil Moon +5 more | 2021-01-12 |
| 8966936 | Expansion valve and air conditioner for vehicles having the same | Jaehyeong Kim, Byeonghak Min | 2015-03-03 |