Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11383785 | Tilting structure of mobility device and mobility device including the same | Jung Nam Choi | 2022-07-12 |
| 11273883 | Tilting structure of mobility device and mobility device including same | Jung Nam Choi | 2022-03-15 |
| 11027575 | Bicycle wheel and method of manufacturing bicycle wheel | Jungnam Choi | 2021-06-08 |
| 10933942 | Mobility device having turning assisting device | Jungnam Choi | 2021-03-02 |
| 10689057 | Bicycle frame having lug | Jungnam Choi | 2020-06-23 |
| 10518835 | Drop-out structure for wheel alignment | Jungnam Choi | 2019-12-31 |
| 10472016 | Bicycle frame and manufacturing method thereof | Jungnam Choi | 2019-11-12 |
| 10427747 | Bicycle frame structure having a drop-out | Jungnam Choi | 2019-10-01 |
| 10406851 | Bicycle wheel and method of manufacturing bicycle wheel | Jungnam Choi | 2019-09-10 |
| 10336391 | Steering system of small mobility | Jungnam Choi | 2019-07-02 |
| 10308310 | Wheel mounting member having damping structure and stamping frame including the same | Jungnam Choi | 2019-06-04 |
| 10300552 | One-side spot welding device | Jungnam Choi | 2019-05-28 |
| 10247255 | Hub unit having a brake disc | Jungnam Choi | 2019-04-02 |
| 9908582 | Bicycle frame structure having rear frame and front frame | Jungnam Choi | 2018-03-06 |
| 8871406 | Highly proton conductive crosslinked vinylsulfonic acid polymer electrolyte composite membranes and its preparation method for polymer electrolyte fuel cells | Young Woo Choi, Chang-Soo Kim, Gu-Gon Park, Seok-Hee Park, Tae-Hyun Yang +6 more | 2014-10-28 |