ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,002, issued on March 11, was assigned to Toyo Engineering Corp. (Tokyo).
"Process and apparatus for urea production" was invented by Keigo Sasaki (Narashino, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a urea synthesis process, temperature distribution in a submerged condenser is reduced. The process includes: synthesizing urea from NH3 and CO2 to generate a urea synthesis solution; by heating the solution, decomposing ammonium carbamate and separating a gaseous mixture containing NH3 and CO2 from the solution to obtain a solution higher in urea concentration than the solution obtained in the synthesizing; with use of a submerged conden...