US Patent Issued to ZHEJIANG AEGIS NEW MATERIALS on March 3 for "Countercurrent extraction device for spinning" (Chinese Inventors)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,797, issued on March 3, was assigned to ZHEJIANG AEGIS NEW MATERIALS Co. LTD. (Shaoxing, China).

"Countercurrent extraction device for spinning" was invented by Fei He (Zhejiang, China), Yang Li (Zhejiang, China) and Qingfa Lai (Zhejiang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A countercurrent extraction device for spinning includes an extraction box containing extraction liquid, and the extraction box is provided with a plurality of partition assemblies, and the extraction box is partitioned into a plurality of extraction chambers by the partition assemblies; each of the partition assemblies includes a first plate and a second plate, ...