ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,486, issued on April 21, was assigned to The Euclid Chemical Co. (Cleveland).
"High strength concrete admixture" was invented by John D. Langham III (Painesville, Ohio) and Benjamin Veres (Willowick, Ohio).
According to the abstract* released by the U.S. Patent & Trademark Office: "A strengthening concrete admixture for the production of high-strength concrete products is provided. The strengthening concrete admixture comprises water; a set retarder comprising a salt of gluconic acid; one or more set accelerators; one or more hardening accelerators; and at least one stabilizing agent. Incorporation of the strengthening admixture in a cement mixture enhances both early and late a...