ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,472,489, issued on Nov. 18, was assigned to CHINA PETROLEUM & CHEMICAL Corp. (Beijing) and SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC (Shanghai).
"Catalyst granules used in olefin disproportionation reaction and preparation method therefor" was invented by Jing Dong (Shanghai), Su Liu (Shanghai) and Yangdong Wang (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "An integrated catalyst can be used in an olefin disproportionation reaction. The integrated catalyst contains a plurality of different integrated active phases. The relative positions among different active phases remain substantially unchanged during the olefin disp...