Science Research Management ›› 2020, Vol. 41 ›› Issue (12): 43-59.
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Xu Zhenliang1, Chen Zixuan1, Yu Hao1, Zhang Jianyu1, Liu Ximei2
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Abstract: In the emerging strategic industries, the rare earth industry is developing rapidly. Rare earth is not only a key strategic basic material for the transformation of traditional industries, but also an indispensable strategic resource in modern industry. China has large reserves of rare earth resources, but the technology is on the low side. The purpose of this paper is not only to promote the development of rare earth industry in the new environment, but also to deeply analyze the development and changes of core technology in the middle reaches of rare earth industry. This paper uses Derwent Innovations Index which is a patent document retrieval system established by Derwent Publishing Company in 1951. This paper uses the patent data of rare earth application materials in the middle reaches of the rare earth industry from 1967 to 2016, as well as the methods of statistical analysis and scientific knowledge graph.
Key words: rare earth, industrial midstream, patent analysis, knowledge map, patent strength
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Xu Zhenliang, Chen Zixuan, Yu Hao, Zhang Jianyu, Liu Ximei. An analysis of the research and development of midstream patent technology of the international rare earth industry[J]. Science Research Management, 2020, 41(12): 43-59.
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