$PVCT Patent Approved: Process for the Synthesis of 4,5,6,7-tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodo-3H-spiro[isoben- zofuran-1,9'-xanthen]-3-one (Rose Bengal) and Related Xanthenes

Provectus' synthesis patent application was approved. See here to read the patent from the World Intellectual Property Organization.