Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12390706 | Bat system with performance limiting structure and methods of making same | Kohei Kikuchi, Yohei Yamashita, David T. Llewellyn, Thu Nguyen, Chi-Hung Lee +1 more | 2025-08-19 |
| 12194353 | Bat | Yohei Yamashita, Katsuhisa Hirano, Thu Nguyen, Chi-Hung Lee | 2025-01-14 |
| 12152687 | Micro-flow valve control mechanism | Yong Luo, Hongmei Chen, Cheng-Te Lin, Chen Zhou Ye, Xiaoming Zhu | 2024-11-26 |
| 11524215 | Bat system with performance limiting structure and methods of making same | Kohei Kikuchi, Yohei Yamashita, David T. Llewellyn, Thu Nguyen, Chi-Hung Lee | 2022-12-13 |
| 10967235 | Bat system with performance limiting structure and methods of making same | Kohei Kikuchi, Yohei Yamashita, David T. Llewellyn, Thu Nguyen, Chi-Hung Lee | 2021-04-06 |
| 10252127 | Baseball/softball bat with outer locking system having shock dissipation characteristics | Thu Van Nguyen, Chi-Hung Lee | 2019-04-09 |
| D832382 | Baseball or softball bat handle smart knob having sensors for analyzing swing characteristics | Thu Van Nguyen, Chi-Hung Lee | 2018-10-30 |
| 10016667 | Baseball/softball bat with shock dissipation characteristics and method of manufacturing same | Thu Van Nguyen, Chi-Hung Lee | 2018-07-10 |
| 9220962 | Double wall bat and process for manufacturing same | Thu Van Nguyen, Chi-Hung Lee | 2015-12-29 |