ALEXANDRIA, Va., May 5 -- United States Patent no. 12,616,204, issued on May 5, was assigned to UNIVERSITE DE LIMOGES (Limoges, France).
"Use of cationic porphyrins as selective herbicide" was invented by Mohamad Issaoui (Limoges, France), Catherine Riou (Isle, France) and Vincent Sol (Limoges, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to the use of cationic porphyrins such as zinc tetra(N-methylpyridyl)porphyrin tetrachloride and tetra(N-methylpyridyl)porphyrin tetrachloride or a mixture thereof, as selective foliar herbicidal agent."
The patent was filed on Feb. 17, 2022, under Application No. 18/546,845.
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