Patent 7169544 was granted and assigned to Eastman Kodak on January, 2007 by the United States Patent and Trademark Office.
Black-and-white, dry processable thermally developable materials have increased stability after imaging with the incorporation of at least 0.0001 mol/m2 of a thermal solvent having one or more >N—C(═O)— groups. Such thermally developable materials include both thermographic and photothermographic materials.