Nov 03, 2006. /Lesprom Network/. The board of directors of Koppers Holdings Inc. declared on November 2 a quarterly dividend of $0.17 per common share, payable January 2, 2007 to stockholders of record on November 30, 2006. Koppers, with corporate headquarters and a research center in Pittsburgh, Pennsylvania, is a global integrated producer of carbon compounds and treated wood products. Including its joint ventures, Koppers operates facilities in the United States, United Kingdom, Denmark, Australia, China, the Pacific Rim and South Africa. The stock of Koppers Holdings Inc. is publicly traded on the New York Stock Exchange.