Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7218868 | Image forming apparatus having locking/releasing unit | Se-hyun Lyu | 2007-05-15 |
| 7110712 | Foreign substance prevention unit to protect electro-photographic printer from foreign substances | Young Min Yoon, Se-hyun Lyu, Woo Chul Jung | 2006-09-19 |
| 7082281 | Electrophotographic printer having movable pre-transfer erasing unit | Woo Chul Jung, Heung-sup Jeong, Se-hyun Lyu, Young Min Yoon, Jae Myoung Choi +2 more | 2006-07-25 |
| 7076187 | Electrophotographic printer | Heung-sup Jeong, Se-hyun Lyu, Jae Myoung Choi, Jin Soo Lee, Woo Chul Jung +2 more | 2006-07-11 |
| 7054578 | System to replace a photosensitive unit and a transfer unit and a printer having the system | Woo Chul Jung, Heung-sup Jeong, Kyung-shig Chung | 2006-05-30 |
| 6952554 | Waste toner agitator for an electrophotographic image forming apparatus | Young Min Yoon, Jin Soo Lee | 2005-10-04 |
| 6904247 | High voltage switching equipment of developing device for color image forming apparatus | Young Min Yoon, Se-hyun Lyu | 2005-06-07 |
| 6892042 | Coupling apparatus, development cartridge and electrophotographic printer having the same | Kyung-hwan Jang, Douk-soon Cha | 2005-05-10 |
| 6873819 | Wasted toner storing apparatus of an image forming apparatus having a rotating dispersing member | Young Min Yoon, Woo Chul Jung | 2005-03-29 |
| 6832063 | Apparatus for driving developers of color image forming apparatus | Yu-man Kim, Young Min Yoon | 2004-12-14 |
| 6725004 | Coupling apparatus used with a printer or photocopier | Joo-hwan Noh, Kyung-hwan Jang | 2004-04-20 |
| 5953575 | Paper guide device for duplex image forming apparatus | Seo-Won Park | 1999-09-14 |
| 5860043 | Electrophotographic apparatus having a development unit shifter | — | 1999-01-12 |