No abstract available.

No abstract available.

This paper analyzes the relationship between process innovation and learning by doing in the semiconductor industry where improvements in manufacturing yield are a catalyst for dynamic cost reductions. In contrast to most previous studies of learning by doing, the learning curve is shown here to...

Why do firms use continuations in the prosecution of their patents? Motivated by the widespread use of continuations by U.S. firms and the prominence of this procedure in U.S. patent policy debates, we investigate the influence of corporate and patent characteristics on the use of continuations....

No abstract available.

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...

In this paper we present data concerning the accuracy of firm's forecasts of engineering employment and suggest a simple model that may be of use in improving their accuracy. The results, which pertain to 54 firms in the aerospace, electronics, chemical, and oil industries, should be of use to...

To what extent would the rate of development and introduction of inventions decline in the absence of patent protection? To what extent do firms make use of the patent system, and what differences exist among firms and industries and over time in the propensity to patent? These questions are in...

This paper presents the first R and D price indexes based largely on actual prices and expenditures reported by firms. The results, based on a carefully designed sample of about 100 firms, show that the GNP deflator, which is used in the official government R and D statistics, has tended to...

For decades, policy makers in both the public and private sectors have been concerned with the question: What is the impact of changes in federal R and D support on company-financed R and D expenditures? This is one of the first empirical studies at a micro level of this topic. The results,...