considerable number of incumbent inventors discontinue. We estimate the persistence of knowledge in regional inventor networks … using alternative assumptions about knowledge transfer. Based on these estimates we analyze how the size and structure of a … network may influence knowledge persistence over time. In a final step, we assess how persistent knowledge as well as the …

considerable number of incumbent inventors discontinue. We estimated the persistence of knowledge in the inventor networks of nine … German regions using alternative assumptions about knowledge transfer. Based on these estimates, we analyzed how the size and … structure of a network may influence knowledge persistence over time. In a final step, we assessed how persistent knowledge as …

We investigate the contribution of different inputs, particularly different knowledge sources, on regional patenting … output in the framework of a knowledge production function. The knowledge sources included are R&D employment, size of public … departments, German Science Foundation (DFG), and from other sources. The contribution of these knowledge sources is tested …

This paper investigates the role of external knowledge in the patenting activity of inventors that work inside firms, i ….e. industrial inventors. It does so with the aim of showing that inventors who combine the use of different sources of knowledge, i … a so-called productivity approach in which the inventors? knowledge sourcing strategies are used as explanatory factors …

We assess the efficiency of regional innovation systems (RIS) in Germany by means of a knowledge production function …

impact of internal and external knowledge pools of both green and other than green technologies on green patent activities …. It turned out that the internal green knowledge stock is positively related to green patent activities with a … considerably large marginal value. The country's green knowledge stock and the green knowledge stock of the same industry in other …

or output of a knowledge production function. We suggest that the productivity of research in patent production functions … to patentable knowledge, and development happens after the initial research phase that may have led to a patent. Instead … of using data on R&D, we separate the knowledge creating process into 'R' and 'D'. This data stems from R&D surveys of …