Patent 7247328 was granted and assigned to Zinpro Corporation on July, 2007 by the United States Patent and Trademark Office.
Chromium (III) 1:3 complexes of alpha amino acids such as methionine are used as animal nutritional supplements. The chromium ion is complexed with three Methionine molecules to form the coordination complex anion [CR(met)3+]. The complex is easily absorbed to provide a bioavailable source for methionine, chromium and for nutritional supplementation of animals.