US Patent Issued to CHINA PETROLEUM & CHEMICAL, SINOPEC PETROLEUM ENGINEERING TECHNOLOGY RESEARCH INSTITUTE on June 16 for "Packer and unsealing method thereof" (Chinese Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,655,710, issued on June 16, was assigned to CHINA PETROLEUM & CHEMICAL Corp. (Beijing) and SINOPEC PETROLEUM ENGINEERING TECHNOLOGY RESEARCH INSTITUTE Co. LTD. (Beijing).

"Packer and unsealing method thereof" was invented by Hui Yue (Beijing), Tong He (Beijing), Wei Pang (Beijing), Shidong Ding (Beijing), Jun Mao (Beijing) and Xiao Guo (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention proposes a packer, comprising a central tube (1), an outer surface of which is provided with a first prefabricated groove (11); a rubber cylinder unit (2), comprising a rubber cylinder assembly (21), an upper rubber cylinder seat (22) and a lowe...