基于专利信息计量的稀土上游产业核心技术变迁趋势分析

Analysis of Change Trend of Rare Earth Upstream Industry’s Core Technology Based on Patent Information

基于专利信息计量视角客观呈现稀土上游产业的核心技术变化趋势。采用专利技术共现网络方法,首先,构建德温特手工代码(DMC)共现网络图谱,分析出核心技术主题分布特征;其次,通过绘制核心技术变迁专利地图,揭示出核心技术推进的演变图景,为稀土产业技术创新的进一步发展提供指导作用。钪、钇、镧系元素;镭或钍的化合物;催化剂的制备、生产等是经久不衰的核心技术。铈元素;氧化还原催化剂;锆、铪化合物;催化剂载体等逐渐成为近年的热点核心技术。

This paper presents rare earth upstream industrial core technology change trend based on the perspective of patent information measurement by using patent technology co-occurrence network method. The feature of the topic of core technology is analyzed by establishing co-occurrence network mapping of DMC. The evolution landscape of core technology is revealed with the patent map. The results show that extraction of scandium,yttrium and lanthanum,preparation of catalysts are the enduring core technologies. Preparation of cerium,REDOX catalyst and catalyst carrier has become hot core technologies in recent years.