ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,709, issued on Dec. 30, was assigned to BASF SE (Ludwigshafen, Germany).
"Methods for making L-glufosinate" was invented by Brian Michael Green (Lutherville, Md.) and Michelle Lorraine Gradley (Canterbury, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods for the production of L-glufosinate (also known as phosphinothricin or (S)-2-amino-4-(hydroxy(methyl)phosphonoyl)butanoic acid) are provided. The methods comprise a two-step process. The first step involves the oxidative deamination of D-glufosinate to PPO (2-oxo-4-(hydroxy(methyl)phosphinoyl)butyric acid). The second step involves the specific amination of PPO to L-glufosinate, ...