Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10464126 | Pressure control system and means for pressure pouring of cast steel wheels | Zhongxian Du, Hongwei Ma, Sijin Zhang, Chengqun Yan, Jianfei Sun +2 more | 2019-11-05 |
| 10252330 | Pouring metallic plug stick clamping mechanism for cast steel wheels | Sijin Zhang, Xuefeng Yu, Chengqun Yan, Zhongxian Du, Changling Hu | 2019-04-09 |