Using the USPTO patent database, this study empirically unpacks the black box of the firm age effects on innovation. We directly measure a potential mediating variable, the extent of firms’ reconfiguration of R&D portfolios (which we call firms’ own R&D proximity). We find that higher R&D...

This study seeks to expand on prior research that used USPTO patent data by utilizing data from the Japanese Patent Office (JPO) to investigate the effects of firm age on innovation. Similar to the previous study, we directly measure the degree of recombination of a firm's R&D portfolio, which...

Using a variety of published and unpublished material, this work examines Japan's economic activities in Singapore, analysing the role of Japanese prostitutes, Kobe's overseas Chinese and the Lee Kwan Yew regime's policy towards Japan