Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9347347 | Exhaust gas after-treatment device for diesel engine | — | 2016-05-24 |
| 8887493 | Fitting portion structure of device for post-processing exhaust gas in agricultural operation vehicle | — | 2014-11-18 |
| 6611914 | Security card check type computer security system method | Jang Won Lee | 2003-08-26 |
| D446485 | Rear bumper cover for automobile | — | 2001-08-14 |
| 5815409 | Control system and method for automatic shutdown of a power supply | Hyung-Han Lee, Jee-Kyoung Park | 1998-09-29 |