Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10752998 | Aging resistance coating film for hub and method for forming protective film | Huanming Ma, Junfu Li, Shengchao Zhang, Guangcai Chen, Meng Liu | 2020-08-25 |
| 10745794 | Anti-aging periodic variable reaction black chromium coating film and forming method thereof | Huanming Ma, Junfu Li, Shengchao Zhang, Qingwang Wei, Meng Liu | 2020-08-18 |
| 10639681 | Automatic powder cleaning system for mixed-line hub bolt holes and combined powder cleaning gun | Huanming Ma, Hongtao Wang, Zhiliang Zhang, Qingwang Wei, Zhiwei Qin | 2020-05-05 |