Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11028464 | Lead-free easy-to-cut corrosion-resistant brass alloy with good thermoforming performance | Zhenqing Hu, Nianrun Zhou, Siqi Zhang, Jia Long, Huawei Zhang | 2021-06-08 |
| 8580191 | Brass alloys having superior stress corrosion resistance and manufacturing method thereof | Zhenqing Hu, Siqi Zhang | 2013-11-12 |
| 8568656 | Environment-friendly manganese brass alloy and manufacturing method thereof | Zhenqing Hu, Qing Lv, Nianrun Zhou, Jia Long, Siqi Zhang | 2013-10-29 |
| 8425697 | Tin-free lead-free free-cutting magnesium brass alloy | Zhenqing Hu, Siqi Zhang | 2013-04-23 |
| 8273192 | Lead-free, bismuth-free free-cutting phosphorous brass alloy | Zhenqing Hu, Siqi Zhang | 2012-09-25 |
| 7776163 | Lead-free free-cutting aluminum brass alloy and its manufacturing method | Zhenqing Hu, Siqi Zhang | 2010-08-17 |