US Patent Issued to Siga Technologies on Oct. 7 for "Polymorphic forms of ST-246 and methods of preparation" (Ohio, Oregon, Washington, Michigan Inventors)

ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,433,868, issued on Oct. 7, was assigned to Siga Technologies Inc. (Corvallis, Ore.).

"Polymorphic forms of ST-246 and methods of preparation" was invented by Shanthakumar R. Tyavanagimatt (Sammamish, Wash.), Melialani A. C. L. S. Anderson (Corvallis, Ore.), William C. Weimers (Corvallis, Ore.), Dylan Nelson (Corvallis, Ore.), Tove' C. Bolken (Keizer, Ore.), Dennis E. Hruby (Albany, Ore.), Michael H. O'Neill (Painesville, Ohio), Gary Sweetapple (Madison, Ohio) and Kelley A. McCloughan (South Haven, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Polymorph forms of 4-trifluoromethyl-N-(3,3a,4,4a,5,5a,6,6a-octahydro-1,3-dioxo-4,6-ethenocycloprop[f]isoi...