Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10494690 | High-toughness seamless steel tube for automobile safety airbag and manufacturing method therefor | Guoli Zhai, Qijiang Wang, Cailing Liu | 2019-12-03 |
| 9663840 | 500 MPA grade longitudinally-welded steel pipe with low yield ratio and manufacturing method therefor | Hongde Shi, Huaizhong Wang, Qijiang Wang | 2017-05-30 |