Advanced Emissions Solutions Inc was incorporated in Colorado in 1997. The Company develops, offers, and implements proprietary environmental technologies and provides equipment and specialty chemicals that enable coal-fueled power plants to meet emissions regulations by enhancing existing air pollution control equipment, maximizing capacity and improving operating efficiencies. It has three wholly-owned subsidiaries, which include Advanced Emissions Solutions, Inc., a Delaware corporation ('ADES'), ADA Intellectual Property, LLC, a Colorado limited liability company ('ADA IP'), and ADA Environmental Solutions, LLC, a Colorado limited liability company ('ADA-ES'). ADA holds a 42.5% controlling interest in Clean Coal Solutions, LLC, a Colorado limited liability company ('Clean Coal'). The company has three operating segments namely, RC (refined coal), EC (emission control) and CC (CO2 capture). The RC segment includes revenues from the leasing of RC facilities and RC sales which approximate the cost of raw coal acquired for RC facilities operated for its own account. The EC segment includes revenue from the supply of emissions control systems including powdered activated carbon injection (ACI) systems, dry sorbent injection (DSI) systems to control SO2 and other acid gases and the sale of specialty chemicals, equipment and services for flue gas conditioning projects and other applications, the licensing of certain technology and consulting services related to such matters and other applications. The CC segment includes revenue from projects relating to the CO2 capture and control market, including projects co-funded by government agencies, such as the Department of Energy (DOE) and industry supported contracts. It has received 17 patents and has an additional 17 patent applications pending or filed relating to different aspects of its technology.