拥有专利数量众多的企业属于专利密集型企业,全部专利的总被引次数大的专利密集型企业则表现出明显的知识溢出现象。这类企业之间的专利引用行为突出反映了企业的技术竞争地位、行业的技术竞争态势和国家的技术创新活跃程度。依托德温特创新索引数据库,检索整理了全球专利拥有量最多且拥有专利的总被引次数最大的专利密集型企业的典型代表,在分析这些企业的国家与行业分布状况的基础上,发现了专利密集型企业集中分布于日、美等国家和车辆与零部件、电子与电气设备等行业的现象。继而考察了这些企业之间的专利直接引用行为,分析了跨国、跨行业引用状况,构建了专利引用网络,展现了关键企业在连通跨行业专利引用网络中的桥梁作用。 Enterprises with a large number of patents are patent-intensive enterprises, and patent-intensive enterprises with a total quoted number of all patents show a clear knowledge spillover. The patent citing behavior among these enterprises highlights the technological competitive position of enterprises, the technological competition in the industry and the degree of technological innovation in the country. Based on the Derwent Innovation Index Database, a typical representative of the most heavily censored and patent-censored global patent-intensive enterprises in the world was retrieved and sorted out. Based on the analysis of the distribution of these countries and industries in these enterprises, Patent-intensive enterprises concentrated in Japan, the United States and other countries and vehicles and parts, electronics and electrical equipment and other industries. Then it examines the direct citation of patents between these enterprises, analyzes the situation of cross-border and cross-industry citation, builds a patent citation network, and shows the role of key enterprises as a bridge in the cross-industry patent citing network.