稳定同位素分离技术专利分析

Analysis of Patents on Separation Technologies for Stable Isotopes

稳定同位素广泛应用于国防、航空航天、医疗诊断、基础物理研究等领域。随着稳定同位素需求量的增长,对稳定同位素产品的丰度和分离方法提出了更高要求,而我国稳定同位素分离技术发展相对较晚,为进一步推动稳定同位素应用技术的快速发展,我国亟须构建具有自主知识产权的稳定同位素制备技术产业链。本文从专利视角剖析全球范围稳定同位素分离技术信息,以期为我国稳定同位素分离技术领域的科研创新和专利布局提供参考。采用IncoPat全球专利数据库,利用IPC分类号与关键词相结合构建检索式,对全球范围稳定同位素分离技术相关专利文献进行采集,对专利申请趋势、专利技术来源、主要申请人、专利技术构成、研究热点进行分析。分析结果显示,稳定同位素分离技术主要来源于日本,其次是美国、中国和俄罗斯,专利申请量排名前10位申请人中有4位来自日本,稳定同位素分离技术的相关专利主要集中在化学置换法、光化学法、萃取法、蒸馏法和离心法。

Stable isotopes have been widely applied to the field of national defense,aerospace,medical diagnosis and fundamental physics.The application of stable isotopes has placed higher demands on separation technologies for stable isotopes.The import dependent of stable isotopes has restrained the research on the applied technologies of stable isotopes,so that it is urgent to establish an industrial chain of stable isotopes with proprietary intellectual property rights in China.Staring from the perspective of patents,global information about separation technologies of stable isotopes are analyzed to give references for scientific research innovation and patent portfolio in separation technologies of stable isotopes in China.Global patents on separation technologies for stable isotopes are collected from IncoPat patent database by utilizing searching strategy which combines IPC classification and keywords,then the trend of patent applications,technical resources of patents,important applicants,technology structure of patents and research hotspot are analyzed.The results show the highest number of separation technologies of stable isotopes patent applications is lodged by Japan,followed by China,America and Russia,while four out of ten patent applicants are Japanese.Primary separation technologies of stable isotopes focus on chemical replacement method,photochemical method,extraction method,distillation method and centrifugation method.