ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,489,122, issued on Dec. 2, was assigned to Haidriver (Shanghai) Energy Technology Co. Ltd (Shanghai).

"Fuel cell bipolar plate and preparation method" was invented by Jiaping Xie (Shanghai), Wei Zhu (Shanghai), Jun Shen (Shanghai), Zhihang Ren (Shanghai) and Xiaozhen Zhao (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a fuel cell bipolar plate and a preparation method. The method includes: synchronously performing cathode flow field pre-rolling and anode flow field pre-rolling on both surfaces of a pair of flexible graphite coils; synchronously performing cathode flow field secondary rolling and anode flow field ...