QW

Qinfeng Wang

CC Crrc Qingdao Sifang Co.: 1 patents #114 of 309Top 40%
Overall (All Time): #1,388,381 of 4,157,543Top 35%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
11602957 Tire with new sidewall pattern, and tire mold Chenglin Li, Peng Zhao, Ping Du, Wei Zhang, Gongyun Zhang +5 more 2023-03-14
11352027 Head module for a rail vehicle Sansan Ding, Yuanmu ZHONG, Hengkui Li, Xiangang Song, Lu Jin +3 more 2022-06-07
7538181 Method for preparing poly (lactic acid)-based resin and its co-polymers Jie Ren, Naiwen Zhang 2009-05-26