ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,815, issued on June 2.

"Device and method for representing the foam porosity state of foamed lightweight soil with self-adjusting beams" was invented by Wubin Wang (Chengdu, China), Yanfei Pei (Chengdu, China), Qian Su (Chengdu, China), Junjie Huang (Chengdu, China), Yipeng Lai (Chengdu, China), Wenyi Jia (Chengdu, China), Rongwei Fan (Chengdu, China), Aibo Luo (Chengdu, China), Xun Wang (Chengdu, China), Chenling Zhou (Chengdu, China), Chengjin Wang (Chengdu, China) and Zongyu Zhang (Chengdu, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device and method for representing the foam porosity state of foamed lightweight soil with self-adjustin...