Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1078418 | Digital torque wrench | Yen-Ting Wu, Ko Han Chen, Chia-Cheng Chen, ChihChiang Lee | 2025-06-10 |
| 11739796 | Universal joint connector and universal joint | Ching-Yi TU | 2023-08-29 |
| 11253981 | Ratchet wrench | — | 2022-02-22 |
| 10524590 | Wrench support rack assembly | Yen-Ting Wu, ChihChiang Lee, Wan-Chiang Wang, Ching-Yi TU, Hui-Mei Chang | 2020-01-07 |
| 10335929 | Tool with a ratchet mechanism | Henry Chou | 2019-07-02 |
| 9099852 | Tool for stripping electric cables | Julian Bignon-Zillhardt, ChihChiang Lee | 2015-08-04 |