中国技术多样性演进和热点领域分析——基于2000—2021年USPTO授权发明专利数据  

Analysis of the Evolution of Technological Diversification and Hot Fields in China:Based on the data of China’s utility patents granted in USPTO from 2000 to 2021

作　　者：夏舒娴 段异兵 XIA Shuxian;DUAN Yibing(Institutes of Science and Development,Chinese Academy of Sciences,Beijing 100190,China;School of Public Policy and Management,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院科技战略咨询研究院,北京100190 [2]中国科学院大学公共政策与管理学院,北京100049

出　　处：《科技和产业》2022年第10期201-206,共6页Science Technology and Industry

基　　金：国家自然科学基金重点项目(71834006)。

摘　　要：为识别中国技术多样性演进特征,通过提取不同层次的专利IPC代码信息,统计专利覆盖的技术领域,计算表征技术多样性的熵指数。基于2000—2021年USPTO中国授权发明专利数据的研究结果表明:中国专利活动的技术领域逐年增加,在细分领域内的技术多样性呈增长趋势;中国技术热点从传统领域已转入新兴领域;专利数量排名前3位的专利权人的技术多样性和热点领域总体上处于持续拓展状态,采取的技术多样性战略和关注的热点领域则有所差异。To identify the evolution characteristics of technological diversification in China,the technological fields covered by patents and the entropy index representing technological diversification are counted by extracting IPC code information at different levels.The research results based on the data of China’s utility patents granted in USPTO from 2000 to 2021 show that the technological fields of China's patent activities are increasing year by year,the degree of diversification in the sub-fields has been increasing;technological hot fields in China have shifted from traditional fields to emerging fields.The top 3 assignees’in terms of the number of patents technological diversification and hot fields are in a state of continuous expansion on the whole,and their technological diversification strategies and hot fields are different.

关 键 词：技术多样性 技术热点 USPTO 熵指数 

分 类 号：G306[文化科学] G35