Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11845122 | Stamping machine and method including variable binder gap | Dajun Zhou, Kaiping Li, Robert D. Miller, Yongiun Zhou | 2023-12-19 |
| 11684962 | Stamping apparatus having a part-time draw bead | Dajun Zhou, Chunlei Wang, Robert D. Miller, Kaiping Li, Yongjun Zhou | 2023-06-27 |
| 10933458 | Stretch forming die | Dajun Zhou, Changqing Du, Robert D. Miller | 2021-03-02 |
| 9827606 | Stamping apparatus having flared bead | Dajun Zhou, Kaiping Li, Changqing Du | 2017-11-28 |