Economists, engineers, and others to formulate and study methods to evaluate industrial research and development R&D projects. In this paper, my purposes are (1) to describe the results of recent studies to measure (ex post) the social benefits from industrial innovations, (2) to indicate the...

To help shed new light on the factors associated with the large differences among innovations in the percent of innovation costs devoted to R and D, detailed data were obtained concerning a sample of chemical innovations. A simple econometric model was used to test a number of tentative...