Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10828246 | Effective hair styling compositions and processes | Yiqi Yang, Helan Xu | 2020-11-10 |
| 5375657 | Chain long-stroke oil-well pumping unit | Chaoying Shi, Xinhua Li, Guanggi Gao, Juanhuan Yang, Quingkun Zeng | 1994-12-27 |