ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,839, issued on March 3, was assigned to AIKANG MEDTECH Co. LTD (Shenzhen, China).

"Micro-column gel card, sample adding mechanism and method" was invented by Chuanguo Zhang (Shenzhen, China), Pengfei Lai (Shenzhen, China), Xiaoxiang Cai (Shenzhen, China), Xueqin Wang (Shenzhen, China) and Kai Zheng (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a micro-column gel card, and a sample adding mechanism and method. The micro-column gel card includes a fixing plate and a plurality of tubular columns (3) arranged and fixed through the fixing plate. The tubular columns (3) are fixed to two sides of the fixing plate respectivel...