US Patent Issued to SHPP GLOBAL TECHNOLOGIES on March 25 for "Method of making a biphenol dianhydride composition, method for purification of a biphenol dianhydride composition, and poly (etherimides) derived from the biphenol dianhydride" (Indiana Inventors)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,448, issued on March 25, was assigned to SHPP GLOBAL TECHNOLOGIES B.V. (Bergen op Zoom, Netherlands).

"Method of making a biphenol dianhydride composition, method for purification of a biphenol dianhydride composition, and poly (etherimides) derived from the biphenol dianhydride" was invented by Dadasaheb V. Patil (Mt. Vernon, Ind.) and James Patrick Schulte II (Mt. Vernon, Ind.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for purification of a biphenol dianhydride composition includes contacting the biphenol dianhydride composition with a halogenated solvent to form a solution, and isolating the purified biphenol dianhydride composition...