US Patent Issued to CHINA PETROLEUM & CHEMICAL, SINOPEC PETROLEUM ENGINEERING TECHNOLOGY RESEARCH INSTITUTE on Aug. 25 for "Polymer having dispersing function, oil well cement dispersant, and preparation method therefor and use thereof" (Chinese Inventors)

ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,715,812, issued on Aug. 25, was assigned to CHINA PETROLEUM & CHEMICAL Corp. (Beijing) and SINOPEC PETROLEUM ENGINEERING TECHNOLOGY RESEARCH INSTITUTE Co. LTD (Beijing).

"Polymer having dispersing function, oil well cement dispersant, and preparation method therefor and use thereof" was invented by Shiming Zhou (Beijing), Xia Miao (Beijing), Guangguo Yang (Beijing), Haoguang Wei (Beijing), Peiqing Lu (Beijing), Jingnan Xiao (Beijing), Hongqi Yang (Beijing), Rengguang Liu (Beijing), Lei Chen (Beijing), Lishuang Wang (Beijing), Laiyu Sang (Beijing), Jinkai Zhang (Beijing) and Yongtao Chu (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A polymer ha...