ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,731, issued on Oct. 14, was assigned to NORTHWEST INSTITUTE OF ECO-ENVIRONMENT AND RESOURCES, CAS (Lanzhou, China).

"Apparatus for extracting soil organic carbon" was invented by Caixia Zhang (Lanzhou, China), Zhongping Li (Lanzhou, China), Zongsheng Li (Lanzhou, China), Xiaobo Wang (Lanzhou, China) and Ningjing Tan (Lanzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for extracting soil organic carbon, including a rotary shaker, a first driver, a grinding and sieving device and a second driver. The rotary shaker includes a first support base, a first motor, a first support ring, a first rotating element, a heater, a weighing ...