Research on Hydrogen Energy Industry Chain Division and Core Patent Identification Based on Patent Analysis
[Purpose/significance]This paper classifies the hydrogen energy industry chain and identifies the core patents based on patent analysis,which provides intelligence support and reference for accurately knowing about the core technology directions and pa-tent portfolio of the hydrogen energy industry chain.[Method/process]Taking the patent classification number as a carrier of technical information,this paper uses the center-of-gravity model to divide the technologies of the hydrogen energy industry chain.Then,the core patent identification index system is constructed from three aspects,namely,technical value,economic value,and legal value.And the entropy weight method and the gray correlation analysis are used jointly to score the patents so that the core patents in every sector can be sifted and analyzed.[Result/conclusion]The upstream of the hydrogen energy industry chain are hydrogen energy production technolo-gies.The midstream are hydrogen energy storage and transportation technologies,hydrogenation infrastructure technologies.The down-stream are fuel cell technologies and hydrogen chemical raw material technologies.The upstream sector has the earliest development,and the overall quality of the patents is relatively low,with a small number of core patents,while the downstream sector has the highest num-ber of core patents and the highest rate of validity.Based on the results of core patent identification,the suggestions for industrial devel-opment are put forward for different sectors in the hydrogen energy industry chain.
patent analysishydrogen energy industry chaincore patent identification
NETL
NSTL
万方数据
维普
