Clean Diesel Technologies, Inc., a clean energy and environmental technologies company, recently announced that it has signed a contract for a worldwide non-exclusive licensing agreement with Stuttgart, Germany-based Robert Bosch GmbH, a global supplier of automotive and industrial technology, customer goods and building technology. Under the agreement, Robert Bosch GmbH has secured rights to patents held by Clean Diesel Technologies for control of oxides of nitrogen (NOx) emission by selective catalytic reduction (SCR). The patents Bosch has agreed to license include Clean Diesel's ARIS method of single-fluid return-flow cooled urea injection for SCR control of NOx emissions, as well as patents covering the combination of exhaust gas recirculation (EGR) with SCR to minimize toxic emissions while optimizing vehicle fuel efficiency. In addition to providing a cost-effective control of NOx emissions, these inventions of Clean Diesel Technologies provide improved fuel economy, also contributing to reduced vehicle carbon dioxide and other greenhouse gas emissions.