全球智库信息集成服务系统(G2TT): Technological Leadership (de)Concentration: Causes in ICTE

G2TT

来源类型	Working Paper
规范类型	报告
DOI	10.3386/w22631
来源ID	Working Paper 22631
	Technological Leadership (de)Concentration: Causes in ICTE
	Yasin Ozcan; Shane Greenstein
发表日期	2016-09-12
出版年	2016
语种	英语
摘要	Using patents as indicators of inventive activity, this article characterizes the concentration of origins of invention from 1976 to 2010, and how these changed over time. The analysis finds pervasive deconcentration in virtually every area related to ICT, but it can explain only a small part of this trend. Deconcentration happens despite the role of lateral entry by existing firms. New firm entry drives part of the deconcentration, but this alone cannot explain the change. A single supply factor in the market for ideas, such as the breakup of AT&T, also cannot explain the trend. Finally, eleven percent of patents change hands through mergers and acquisitions activity, but this does not make up for the declines in concentration in the origins of invention.
主题	Financial Economics ; Corporate Finance ; Industrial Organization ; Industry Studies ; Development and Growth ; Innovation and R& ; D
URL	https://www.nber.org/papers/w22631
来源智库	National Bureau of Economic Research (United States)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/580304
推荐引用方式 GB/T 7714	Yasin Ozcan,Shane Greenstein. Technological Leadership (de)Concentration: Causes in ICTE. 2016.

条目包含的文件
文件名称/大小	资源类型	版本类型	开放类型	使用许可
w22631.pdf（545KB）	智库出版物		限制开放	CC BY-NC-SA	浏览