中文摘要：

基于我国国家知识产权局1997—2011年的授权发明专利数据，运角科学计量方法，分析探讨了我国城市间产学研合作创新的基本特征，并对城市间产学研合作专利的知识辐射距离、知识流动方向及其演化趋势进行了比较研究。结果表明，我国城市间产学研合作专利数量整体保持增长趋势，但随着城市间地理距离的增长，产学研合作专利数量出现先增后减的现象。受科教资源和经济资源地理分布不平衡的影响，各城市在产学研合作创新网络中分别担当了知识流入方、知识流出方以及知识流入与流出双向互动的节点作用。此外，城市间产学研合作专利的地理空间分布与知识辐射距离也存在较大的行业差异。

英文摘要：

Based on the licensed patent data of the State Intellectual Property Office from 1997 to 2011 year, this paper studied the characteristics of university-industry collaboration between cities in China. It carried on the cornprehensive and comparative research on the knowledge radiation distance, knowledge flow direction as well as its evolution trend of university-industry collaboration between cities by using the scientific metrology method. The resuits showed that the university-industry collaboration between cities has gained rapid development, however the number of joint patent between cities increases initially, and then decrease with increasing geographic distance. At the same time, due to the unbalance distribution of science, education and economic resources, each city plays a different functional role respectively in the cooperative innovation networks, as the node of knowledge inflow, knowledge outflow and bidirectional knowledge interaction. In addition, the geographical distribution and the knowledge radiation distance of university-industry collaborative patents between cities show different characteristics in different sectors.