ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,416,299, issued on Sept. 16, was assigned to XI'AN ZHENYU ELECTRON ENGINEERING Co. LTD. (Shaanxi, China).

"Multi-pump integrated mixed fluid delivery device" was invented by Shaobin Wang (Shaanxi, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A multi-pump integrated mixed fluid delivery device includes a hollow cylindrical casing, a hydraulic drive part, a power part, a sample part and a pipeline unit. The hydraulic drive part, the power part, the sample part and the pipeline unit are provided within the casing in sequence. The hydraulic drive part includes multiple hydraulic plunger pumps. The power part includes a dual-shaft motor, wherein an ...