ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,713, issued on Feb. 17, was assigned to KNAUF GIPS KG (Iphofen, Germany).

"Low-cost, effective phosphate-based lime bucking inhibitor" was invented by Scott Cimaglio (Grayslake, Ill.) and Sriram K. Valluri (Grayslake, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dry construction plaster composition made with at least stucco in an amount from about 25 to about 99 wt %; hydrated lime in an amount from about 0.5 to about 75 wt %; a phosphate-based lime bucking inhibitor in an amount from about 0.01 to about 1 wt %; and a setting reaction controlling agent, wherein the setting reaction controlling agent comprises a set accelerator, a set inhibi...