Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11891892 | Square pile construction method and equipment of a rotary drilling rig | Jie Zheng, Changwei Li | 2024-02-06 |
| 11876016 | Methods for forming hole structure in semiconductor device | Gang Yang, Xiang Hui Zhao, Zui Xin Zeng, Lianjuan Ren, Jian Dai | 2024-01-16 |
| 11817348 | Methods for forming hole structure in semiconductor device | Gang Yang, Xiang Hui Zhao, Zui Xin Zeng, Lianjuan Ren, Jian Dai | 2023-11-14 |
| 6146128 | Cigarette lighter with security arrangement | Xin Feng | 2000-11-14 |
| 6142768 | Cigarette lighter with security arrangement | Xin Feng | 2000-11-07 |