US Patent Issued to CHINA TIESIJU CIVIL ENGINEERING GROUP, THE THIRD CONSTRUCTION Co. LTD. OF CTCE GROUP on Sept. 23 for "Method for preventing sudden subsidence of open caisson in soft foundation" (Chinese Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,684, issued on Sept. 23, was assigned to CHINA TIESIJU CIVIL ENGINEERING GROUP Co. LTD. (Hefei, China) and THE THIRD CONSTRUCTION Co. LTD. OF CTCE GROUP (Tianjin, China).

"Method for preventing sudden subsidence of open caisson in soft foundation" was invented by Rui Yuan (Tianjin, China), Lin Qin (Tianjin, China), Gang Huang (Tianjin, China), Qianchao Yin (Tianjin, China), Hao Hong (Tianjin, China) and Jianlong Yan (Tianjin, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for preventing sudden subsidence of an open caisson in a soft foundation includes the following steps: a position of the open caisson is determined; grouting is car...