Exhibit 4.1 AMENDMENT NO. 2 TO RIGHTS AGREEMENT This Amendment No. 2 to Rights Agreement, dated as of December 27, 2004 (this "Amendment"), is entered into by and between Calgon Carbon Corporation, a Delaware corporation (the "Company"), and Equiserve...Rights Agreement • December 27th, 2004 • Calgon Carbon Corporation • Industrial inorganic chemicals • Delaware
Contract Type FiledDecember 27th, 2004 Company Industry Jurisdiction