innovation experience, the results further highlight the important role of knowledge provided by skilled employees and unobserved …This paper investigates whether firms innovate persistently or discontinuously over time using an innovation panel data … set on German manufacturing and service firms for the period 1994-2002. We find that innovation behaviour is permanent at …

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 …

knowledge through the U.S. Small Business Innovation Research Program. Our conceptual framework assumes the nature of an …