Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12368686 | Method and system for identifying messenger counterpart in order to provide personalized service | Gyun Ho Park, Se Hyeon Park | 2025-07-22 |
| 11030500 | Code processing device and code processing method | — | 2021-06-08 |
| 8458856 | Upright type cleaner | Byoung In Lee, Jae Man Joo, Hyung Il Jeon, Sung-cheol Lee | 2013-06-11 |
| 7774898 | Vacuum cleaner and method for reducing noise generated thereby | Seung Gee Hong, Jae Man Joo, Jun Hwa Lee | 2010-08-17 |
| 7610654 | Vacuum cleaner | Jea Won Lee, Jae Man Joo, Jun Hwa Lee, Seung Gee Hong | 2009-11-03 |