Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11420252 | Punch pin assembly and die casting machine having punch pin assembly | Chuan Dai, Jiansheng Wang, Yachun Wan, Yang Han, Hongyin Zhang +2 more | 2022-08-23 |
| 11376670 | Cutting method for aluminum alloy casting, and trimming die | Haijun Guo, Dengyao Li, Gang Zhao, Yacong Zhang | 2022-07-05 |
| 11123786 | Trimming die for casting of front steering knuckle in double-wishbone suspension | Zuo Xu, Haijun Guo, Dengyao Li, Yacong Zhang | 2021-09-21 |
| 7426740 | Optical recording/reproducing apparatus | Bin Guo, Li-Ming Wan | 2008-09-16 |