Los puntos clave no están disponibles para este artículo en este momento.
The authors test whether a measure of patent activity in the United States is a reliable proxy for innovative activity. They introduce a production function for patented inventions based on knowledge, firm size, and the ease of appropriability. The results are then compared with those from their 1988 paper using a direct measure of innovative activity. Patents are found to vary with company R&D, total R&D, and skilled labor in the same manner as does innovative activity. In general, the results support the validity of patent counts as a measure of innovative activity. Copyright 1989 by WWZ and Helbing & Lichtenhahn Verlag AG
Ács et al. (Tue,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: