ALEXANDRIA, Va., March 24 -- United States Patent no. 12,583,792, issued on March 24, was assigned to CemVision AB (Stockholm).

"Cement additives for rapid strength development" was invented by Claes Goran Kollberg (Morbylanga, Sweden) and Paul Johan Sandberg (Nokomis, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods are provided for a forming a supersulfated cementitious material. In one embodiment, the supersulfated cementitious material may include a ladle slag and one or more sulfates obtained from various industrial sulfurization processes. The supersulfated cementitious material may further include one or more supplementary cementitious materials (SCMs). An amount of ground granu...