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Abstract：
This paper presents new evidence on knowledge flows in the Beijing-Tianjin-Hebei region of China, involving 43 cities (districts) in the Beijing-Tianjin-Hebei region, based on the invention patent transfer data from the State Intellectual Property Office of China. First, the characteristics of technology flows in the Beijing-Tianjin-Hebei region are analyzed in terms of changes in the number of flows, types of flowing subjects and spatial distribution characteristics. Then, a multi-level patent technology flow network in the Beijing-Tianjin-Hebei region was constructed, and the structural characteristics and node characteristics of each level network were explored separately. The key findings of the study are as follows. (1) The number of patented technology flows has been growing over time, showing obvious phase characteristics during the study period. As a whole, the intra-city (district) technology flow in the Beijing-Tianjin-Hebei region is higher than the inter-city (district). (2) The multi-level patent technology flow network in the Beijing-Tianjin-Hebei region shows dynamic characteristics, with more and more mobile subjects participating in the patent technology flow network, some network nodes becoming closer to each other, and the trend of small group technology flow increasing significantly. (3) Enterprises are the core hub of the patent technology flow network in Beijing-Tianjin-Hebei region. Individual invention patent technology transfer also occupies a high proportion and the participation of universities and colleges in the patent technology flow network in the Beijing-Tianjin-Hebei region is gradually increasing. (4) Over time, the flow of patent technology in the 43 cities (districts) in the Beijing-Tianjin-Hebei region has gradually become active and no longer relies excessively on a particular city (district) for patent technology transfer.
摘要：
本文为中国京津冀地区的知识流动提供了新的证据，涉及京津冀地区43个城市(区)，基于中国国家知识产权局的发明专利转让数据。首先,从流动数量变化的角度分析了京津冀地区技术流动的特征，流动主体类型和空间分布特征。然后，构建了京津冀地区多层次的专利技术流网络,并分别探讨了各级网络的结构特征和节点特征。这项研究的主要发现如下。（1）随着时间的推移，专利技术流的数量一直在增长，研究期间表现出明显的阶段性特征。作为一个整体,京津冀地区市(区)内技术流量高于市(区)间。(2)京津冀地区多层次专利技术流网络呈现动态特征,随着越来越多的移动主体参与到专利技术流网络中,一些网络节点变得彼此更接近，小团体技术流动趋势显著增加。(3)企业是京津冀地区专利技术流网络的核心枢纽。个人发明专利技术转移也占有较高的比重,高校在京津冀地区专利技术流网络中的参与度也在逐步提升。（4）随着时间的推移，京津冀地区43个城市(区)的专利技术流动逐渐活跃，不再过分依赖某一城市(区)进行专利技术转移。
