The purpose of this paper is to investigate the pattern of knowledge flows as indicated by patent citations. In order to compute the technological proximity, we have followed the methodology developed by Jaffe (1986), where a technological vector is based on the distribution of patents of each...

This study contributes to existing literature on firms’ innovative activity examining the influence of both internal firms’ physical and R&D capital, and external national and international knowledge spillovers. The paper presents a cross national analysis of United States, Japan and Europe...

This study contributes to existing literature on firms’ innovative activity examining the relationship between the R&D rivalry and spillovers at the firm level. In particular, we present an empirical analysis in United States, Japan and Europe based upon a new dataset composed of 879 worldwide...

The purpose of this paper is to explore the correlation between the technological proximity measures in three areas: USA, Japan and Europe. In each economic area, we use information from two international patent systems to construct the technological proximity for 240 international firms. In...

In this paper we investigate the effects of technological and geographical proximity on the knowledge flows in three economic areas: USA, Japan and Europe. In each economic area, we exploit information from two international patent offices data, the United States Patent and Trademarks Office...

In this paper we analyze the relationship between R&D spillovers and productivity. To this aim, we use data from 9th and 10th “Indagine sulle imprese manifatturiere” (IMM) surveys carried out by Capitalia. These two surveys, which cover the period 2001-2006, contain both quantitative and...