Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7913483 | Embedded type system positioning spinning method | Yafu Qiu, Weilin Xu, Dong Qiu, Cailing Ding, Wenge Wang +5 more | 2011-03-29 |
| 7552580 | Method and apparatus for producing high quality yarn on a ring-spinning machine | Weilin Xu, Zhigang Xia, Wenxiang Ye, Wenbin Li, Shangyong Zhang | 2009-06-30 |