US Patent Issued to PetroChina on May 5 for "Separation and recovery method for boron trifluoride and complex thereof in olefin polymerization reaction" (Chinese Inventors)

ALEXANDRIA, Va., May 5 -- United States Patent no. 12,617,689, issued on May 5, was assigned to PetroChina Co. Ltd. (Beijing).

"Separation and recovery method for boron trifluoride and complex thereof in olefin polymerization reaction" was invented by Tong Liu (Beijing), Yuanyuan Cao (Beijing), Yulong Wang (Beijing), Libo Wang (Beijing), Xianming Xu (Beijing), Hongping Li (Beijing), Enhao Sun (Beijing), Xiuhui Wang (Beijing), Wei Sun (Beijing), Han Gao (Beijing), Hongling Chu (Beijing), Yongjun Zhang (Beijing), Yonggang Ji (Beijing), Kecun Ma (Beijing), Yan Jiang (Beijing), Qian Chen (Beijing), Hongliang Huo (Beijing) and Qi Yu (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention pro...