Dechezleprêtre, Antoine; Martin, Ralf; Mohnen, Myra - Centre for Economic Performance, LSE - 2014
investigate the relative intensity of knowledge spillovers in clean and dirty technologies in two technological fields: energy … capture the indirect knowledge spillovers generated by patents. We find that conditional on a wide range of potential … confounding factors clean patents receive on average 43% more citations than dirty patents. Knowledge spillovers from clean …