ALEXANDRIA, Va., May 5 -- United States Patent no. 12,617,691, issued on May 5, was assigned to EASYMINING SWEDEN AB (Sollentuna, Sweden).
"Recovery of commercial substances from apatite mineral" was invented by Yariv Cohen (Uppsala, Sweden), Angela Van Der Werf (Solna, Sweden), Viktoria Westlund (Uppsala, Sweden), Cristian Tunsu (Uppsala, Sweden) and Hugo Royen (Uppsala, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for recovery of commercial substances from apatite mineral comprises dissolving of apatite mineral in an acid comprising hydrochloride. The dissolution gives a first liquid solution comprising phosphate, calcium and chloride ions. The first liquid solution is treated into a seco...