ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,422, issued on June 23, was assigned to SOUTHEAST UNIVERSITY (Nanjing, China).
"Color-adjustable repairing agent and preparation method therefor, and concrete containing repairing agent" was invented by Chunxiang Qian (Nanjing, China), Xinwei Ren (Nanjing, China) and Qinwen Chen (Nanjing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A color-adjustable repairing agent and a preparation method therefor, and concrete containing the repairing agent are disclosed in the present invention; the repairing agent is a mixture of microbial powder, dopamine and a calcium source immobilized by cement; and according to total mass of the mixture, a mass pe...