Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12351777 | Ceramic ball having detergent function and manufacturing method thereof | — | 2025-07-08 |
| 12187361 | Steer-by-wire steering apparatus | — | 2025-01-07 |
| D985221 | Roller type cleaner | — | 2023-05-02 |
| 11054007 | Lead screw structure and assembly and rear wheel steering apparatus using the same | Han Sang Chae | 2021-07-06 |
| 10925459 | Case for dishwasher-use washing balls | — | 2021-02-23 |
| 9523411 | Planetary gear reducer for vehiclular steering apparatus | Jung Sik Park, Han Sang Chae | 2016-12-20 |