Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11285523 | Metal forming method including post-forming stretching to control springback | Dajun Zhou, Kaiping Li, Robert D. Miller | 2022-03-29 |
| 10933458 | Stretch forming die | Dajun Zhou, Robert D. Miller, Richard J Siemen | 2021-03-02 |
| 10786842 | Draw-in control for sheet drawing | Dajun Zhou, Robert D. Miller | 2020-09-29 |
| 10668516 | Post-compression for springback reduction | Dajun Zhou | 2020-06-02 |
| 10328504 | Two-stage method of cutting ultra-high strength material sheet | Dajun Zhou, Robert D. Miller | 2019-06-25 |
| 9914164 | Machine press | John F Siekirk, III, Dajun Zhou, Robert D. Miller | 2018-03-13 |
| 9827606 | Stamping apparatus having flared bead | Dajun Zhou, Kaiping Li, Richard J Siemen | 2017-11-28 |
| 9149854 | Stamping apparatus | Dajun Zhou, Yang Hu, Yongjun Zhou | 2015-10-06 |
| 9120137 | Stamping apparatus and method of use | Dajun Zhou, John F Siekirk, III | 2015-09-01 |