’ ego-networks employing a unique panel dataset for the full population of 233 German laser source manufactures between 1990 … panel data count model with fixed effects are suggestive of direct innovation effects due to individual cooperation events …

; timing of network entry ; innovation networks ; German laser industry … level. We apply a unique longitudinal event history dataset based on the full population of 233 German laser source …

The relationship between innovation and firm survival is analyzed for the population of German laser source producers … from the beginning of the industry until 2005. Innovation effort is approximated by the generation of high quality patents … in laser sources technology (IPC H01S) and by having patents with university inventors. Quality patents are defined as …

empirical context of German laser research and manufacturing over more than 40 years from the emergence of the industry to the …