ALEXANDRIA, Va., June 6 -- United States Patent no. 12,283,354, issued on April 22, was assigned to CENTRAL RESEARCH INSTITUTE OF BUILDING AND CONSTRUCTION Co. LTD. MCC (Beijing).
"Method for estimating effective prestress and calculating evaluation characteristic value of concrete structure" was invented by Qing Xu (Beijing), Bin Zeng (Beijing), Xiaoda Xu (Beijing), Jiawei Li (Beijing), Haoda Zhang (Beijing) and Yanyan Wang (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "A concrete structure effective prestress estimation and evaluation characteristic value calculation method which includes calculating effective prestress probability distribution of a concrete structure prestress rebar, establishing...