US Patent Issued to CHINA PETROLEUM & CHEMICAL, SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC on June 30 for "Method for preparing ethylene propylene" (Chinese Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,555, issued on June 30, was assigned to CHINA PETROLEUM & CHEMICAL Corp. (Beijing) and SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC (Shanghai).

"Method for preparing ethylene propylene" was invented by Hongyuan Zong (Shanghai), Xiaohong Li (Shanghai), Guozhen Qi (Shanghai), Hongtao Wang (Shanghai), Zhinan Yu (Shanghai), Yijun Zheng (Shanghai) and Li Wang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device for mixing at least two granular materials has a first lifting tube used for loading first particles and a second lifting tube surrounding and coaxial to the first lifting tube and used for loading second particles...