ALEXANDRIA, Va., May 12 -- United States Patent no. 12,622,914, issued on May 12, was assigned to Douglas Pharmaceuticals Ltd. (Lincoln, New Zealand).

"Pharmaceutical rectal suppository compositions of 6-thioguanine, methods of treatment and/or methods of manufacturing" was invented by Peter William Surman (Lincoln, New Zealand), Zhen Shi (Lincoln, New Zealand), Fergus Cameron Binnie (Lincoln, New Zealand), Christopher Ritchie (Lincoln, New Zealand) and Yuefeng Long (Lincoln, New Zealand).

According to the abstract* released by the U.S. Patent & Trademark Office: "Described is a rectal suppository. The rectal suppository comprises 6-thioguanine, at least one hard fat, and at least one surfactant. Further or alternatively, the rectal suppo...