Showing 1 - 10 of 192
This paper uses a gravity framework to investigate the effects of distance as well as subnational and national borders in knowledge spillovers. Drawing on the NBER Patent Citations Database, we examine patent citations data at metropolitan level within the U.S. and the 38 largest patent-cited...
Persistent link: https://www.econbiz.de/10013117109
We study the prevalence and traits of global collaborative patents for U.S. public companies, where the inventor team … is located both within and outside of the United States. Collaborative patents are frequently observed when a corporation … is weak. We also connect collaborative patents to the ethnic composition of the firm’s U.S. inventors and cross …
Persistent link: https://www.econbiz.de/10013315478
this prediction on a new dataset which combines detailed information on craft guilds and patents in the Venetian Republic …
Persistent link: https://www.econbiz.de/10012947993
Migration and trade are often linked through ethnic networks boosting bilateral trade. This study uses migration to quantify the importance of Ricardian technology differences for international trade. The framework provides the first panel estimates connecting country-industry productivity and...
Persistent link: https://www.econbiz.de/10012902445
This research empirically establishes and theoretically motivates the hypothesis that population aging has a hump-shaped effect on inventive activity. We estimate this hump-shaped relationship in a panel of 33 OECD countries over the period 1960-2012. The increasing part of the hump captures the...
Persistent link: https://www.econbiz.de/10012993693
We study the 1956 consent decree against the Bell System to investigate whether patents held by a dominant firm are … to license all its existing patents royalty-free. The compulsory licensing increased follow-on innovation building on … Bell patents by 17%. This effect is driven mainly by young and small companies. Yet, innovation increased only outside the …
Persistent link: https://www.econbiz.de/10012960483
linked fields. Our analysis uses 1.8 million U.S. patents and their citation properties to map the innovation network and its …
Persistent link: https://www.econbiz.de/10012977470
This paper uses a gravity framework to investigate the effects of distance as well as subnational and national borders in knowledge spillovers. Drawing on the NBER Patent Citations Database, we examine patent citations data at metropolitan level within the U.S. and the 38 largest patent-cited...
Persistent link: https://www.econbiz.de/10005000385
We construct a tractable general equilibrium model of cumulative innovation and growth, in which new ideas strictly improve upon frontier technologies, and productivity improvements are drawn in a stochastic manner. The presence of positive knowledge spillovers implies that the decentralized...
Persistent link: https://www.econbiz.de/10013075135
patentability standards at PTOs (Patent and Trademark Offices awarding so-called bad patents), not only “false innovators” have the … chance of being granted patents but also, and more interestingly, “true innovators” are forced to patent more intensively … reduces the incentives to exert effort in R&D activities. Then, drawing on the signaling role of patents highlighted by the …
Persistent link: https://www.econbiz.de/10013051385