US Patent Issued to YARA INTERNATIONAL ASA on Dec. 30 for "Method for treating solid hazardous heavy metal-containing compositions" (Norwegian, Polish Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,636, issued on Dec. 30, was assigned to YARA INTERNATIONAL ASA (Oslo, Norway).

"Method for treating solid hazardous heavy metal-containing compositions" was invented by Patrycja Kita (Poznan, Poland), Tanja Vojnovic (Skien, Norway), Lene Sund (Porsgrunn, Norway), Katrine Lie Boyesen (Skien, Norway) and Tom Rames Jorgensen (Porsgrunn, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method comprising a) mixing and dissolving the solid hazardous heavy metal-containing composition with an acid solution; b) precipitating the heavy metal from the hazardous heavy metal acid compositions by; c) precipitating the heavy metal from the hazardous heavy ...