Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5123970 | Method of producing an air-hardenable bainite-martensite steel | Yankang Zheng, Xiuyun Chen, Donghao Chen, Rufa Zhao | 1992-06-23 |
| 4957702 | Air-cooling duplex bainite-martensite steels | Yankang Zheng, Xiuyun Chen, Donghao Chen, Rufa Zhao | 1990-09-18 |
| 4812182 | Air-cooling low-carbon bainitic steel | Rufa Zhao, Yankang Zheng, Ziuyun Chen, Guangchu He, Jiaoyou Gu +3 more | 1989-03-14 |