Technology transfer on a two-way street: R&D spillovers through intermediate input usage and supply

Intermediate input usage is known to channel R&D spillovers across countries and industries. This paper highlights that technology also diffuses across countries and industries through intermediate input supply. Technology transfer to intermediates suppliers ensues from R&D that induces a demand for technologically advanced intermediates. I analyze R&D spillovers through intermediate input usage and supply for 18 manufacturing industries in 20 OECD countries over 1987–2009. Results support both use- and supply-driven R&D spillovers. Comparing their effects reveals interesting variations. Among domestic industries, intermediate input supply is the dominant channel. For international relations, both use- and supply-driven R&D spillovers are found.