Originally formed as the Pittsburgh Coke & Chemical Company in the 1940s, the company's main operations are currently centered in North America. The company has its presence overseas such as Chemviron Carbon in Europe, Calgon Carbon Japan KK in Japan, Calgon Carbon Thailand Ltd. in Thailand, and Hyde Marine, Inc. As of 2015 Calgon Carbon operates fifteen facilities for manufacturing, reactivation, and equipment in the US, Asia, and Europe, and employs around 1,100 people. In early 2015 the company moved their headquarters from the Pittsburgh suburb of Robinson to nearby Moon Township.