Issued Patents All Time
Showing 1–18 of 18 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, Renqin Zhang +1 more | 2025-08-19 |
| 12194353 | Bat | Yohei Yamashita, Katsuhisa Hirano, Thu Nguyen, Renqin Zhang | 2025-01-14 |
| 11524215 | Bat system with performance limiting structure and methods of making same | Kohei Kikuchi, Yohei Yamashita, David T. Llewellyn, Thu Nguyen, Renqin Zhang | 2022-12-13 |
| 11187559 | Code disk, optical detector, optical absolute rotary encoder and encoded-value-outputting method with error detection and correction | Ming-Chieh Chou, Kuo-Chih Wang, Yi-Cheng Chen | 2021-11-30 |
| 10967235 | Bat system with performance limiting structure and methods of making same | Kohei Kikuchi, Yohei Yamashita, David T. Llewellyn, Thu Nguyen, Renqin Zhang | 2021-04-06 |
| 10252127 | Baseball/softball bat with outer locking system having shock dissipation characteristics | Thu Van Nguyen, Renqin Zhang | 2019-04-09 |
| 10247582 | Optical encoding device including an encoding disc having diffracting patterns | Ming-Chieh Chou, Ching-Chang Chen, Yi-Cheng Chen | 2019-04-02 |
| D832382 | Baseball or softball bat handle smart knob having sensors for analyzing swing characteristics | Thu Van Nguyen, Renqin Zhang | 2018-10-30 |
| 10016667 | Baseball/softball bat with shock dissipation characteristics and method of manufacturing same | Thu Van Nguyen, Renqin Zhang | 2018-07-10 |
| 9851560 | Optical device and projection apparatus | Ming-Chieh Chou, Yi-Cheng Chen | 2017-12-26 |
| 9220962 | Double wall bat and process for manufacturing same | Thu Van Nguyen, Renqin Zhang | 2015-12-29 |
| 8998445 | Chronogical energy saving color separate system | — | 2015-04-07 |
| 8421956 | Composite color separation system | Hui-Hsiung Lin, PO-CHOU CHEN, Cheng-Huan Chen | 2013-04-16 |
| 8305527 | Color separation system | Hui-Hsiung Lin, Jen-Hui Tsai, Yu-Nan Pao, Chin-Ju Hsu | 2012-11-06 |
| 7907343 | Composite optical dividing device | Yu-Nan Pao, Hui-Hsiung Lin | 2011-03-15 |
| 7742234 | Composite optical dividing device | Hsiu-Chen Hsu, Hui-Hsiung Lin | 2010-06-22 |
| 7738174 | System for optical color division | Hui-Hsiung Lin | 2010-06-15 |
| 7719767 | Composite light division device and image apparatus using the same | Hui-Hsiung Lin, Yu-Nan Pao | 2010-05-18 |