Clean Diesel Technologies, Inc. designs, develops, markets, and licenses technologies and solutions that reduce harmful emissions from internal combustion engines, and improve fuel economy and engine power. Its products and solutions include the Platinum Plus fuel-borne catalyst, a diesel fuel soluble additive that reduces particulates, unburned hydrocarbons, and carbon monoxide emissions; ARIS, an advanced reagent injection system used in selective catalytic reduction systems for control of emissions of nitrogen oxides from diesel engines, and for hydrocarbon injection applications; diesel particulate filter technology based on catalyzed wire mesh filter elements; and biofuels technology, including Biodiesel Plus. The company also offers various engineering and development consulting services. It sells its products to distributors and resellers, as well as to various transportation segments, including on-road, off-road, rail and marine, and other end users. The company offers its products through its distribution network, direct sales, sales consultants, and agents primarily in the United States, Europe, and Asia. Clean Diesel Technologies was founded in 1994 and is headquartered in Bridgeport, Connecticut.