Startups in IT and life sciences appear to be flourishing. However, startups in other sectors, such as new materials, automation, and eco-innovations, which are often called "deep tech", seem to struggle. We argue that innovations with both technical and commercial challenges, typical of deep...

This paper examines the empirical anomaly that in a sample of 5811 patents on which US faculty are listed as inventors, 26% of the patents are assigned solely to firms rather than to the faculty member's university as is dictated by US university employment policies or the Bayh Dole Act. In this...

This paper studies how innovative firms manage their innovation portfolios after filing for Chapter 11 reorganization using three decades of data. We find that they sell off core (i.e., technologically critical and valuable), rather than peripheral, patents in bankruptcy. The selling pattern is...

This paper studies the impact that immigrant innovators have on the global activities of U.S. firms by analyzing detailed data on patent applications and on the operations of the foreign affiliates of U.S. multinational firms. The results indicate that increases in the share of a firm's...

We study the shifts in U.S. firms' workforce composition and organization associated with the use of AI technologies. To do so, we leverage a unique combination of worker resume and job postings datasets to measure firm-level AI investments and workforce composition variables, such as...

We use the U.S. patent data merged with firm-level datasets to establish new facts about the role of mega firms in generating "novel patents"--innovations that introduce new combinations of technology components for the first time. While the importance of mega firms in novel patents had been...

In an earlier paper, we showed that the value of shadow prices depends on how the government contemplates re- equilibrating the economy to the perturbation associated with any project, except in the extreme case where the government has chosen all policy instruments optimally. Only under...

This paper develops a general methodology for analyzing shadow wage (and other shadow prices). Our approach is to identify those reduced form relationships describing the economy which are central to the determination of the shadow wage, and use these to obtain simple formulae for the shadow...

This paper develops and applies a model of world trade and exchange rates to analyze dynamic interaction of the current account and exchange rate. The model is designed to concentrate on the determination of trade flows, prices and exchange rates for the OECD member countries but it also covers...

The central thesis of this paper is that the management of portfolios incorporating a variety of investment assets does require the use of time and other scarce resources in searching for, collecting, interpreting, and applying relevant information. Accordingly, the returns on these assets would...