ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,085, issued on June 24, was assigned to Yantai Jereh Petroleum Equipment & Technologies Co. Ltd. (Yantai, China).
"Sand storage and conveying apparatus" was invented by Zhongliang Liu (Shandong, China), Kaishen Liu (Shandong, China), Chuanlu Bao (Shandong, China), Liang Lv (Shandong, China), Rikui Zhang (Shandong, China), Xincheng Li (Shandong, China) and Yipeng Wu (Shandong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sand storage and conveying apparatus is provided. The sand storage and conveying apparatus includes: a sand storage device, at least two first conveying devices and a lifting device. The sand storage device includes at leas...