About Company
Schering-Plough Corporation was an American pharmaceutical company. It was originally the U.S. subsidiary of the German company Schering AG, which was founded in 1851 by Ernst Christian Friedrich Schering. As a result of nationalization, it became an independent company. In 1971, the Schering Corporation merged with Plough to form Schering-Plough. On November 4, 2009 Merck & Co. merged with Schering-Plough with the new company taking the name of Merck & Co.
