Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11486201 | Fixed cutting structure-composite cone drill bit | Yuchun Kuang, Qin Wang, Zhiming Shi | 2022-11-01 |
| D938740 | Hanging shoe rack | — | 2021-12-21 |
| 10961784 | Rotating cutter single cone bit | Yingxin YANG, Zongliang Xie, Haitao Ren, Liyuan Yang | 2021-03-30 |
| 9103168 | Scraping-wheel drill bit | Ying Xin Yang, Min-Hsien Lin, Zhu Pei, Hai Tao Ren | 2015-08-11 |
| 8985243 | Composite drill bit | Ying Xin Yang, Min-Hsien Lin, Zhu Pei, Hai Tao Ren | 2015-03-24 |