US Patent Issued to Shandong University on Feb. 3 for "Method and device for a sand column grouting filtration experimental device" (Chinese Inventors)

ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,936, issued on Feb. 3, was assigned to Shandong University (Jinan, China).

"Method and device for a sand column grouting filtration experimental device" was invented by Dongming Wang (Jinan, China), Feng Zhang (Jinan, China), Lei Gao (Jinan, China) and Yang Yu (Jinan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sand column grouting filtration experimental device includes a sand column, a grout injection structure connected above the sand column and a grout exit structure connected below the sand column, the sand column comprises a plurality of connecting units; Four screws are provided around the sand column, and the four screws run throug...