This research explores the research situation of blockchain technology by patent analysis method. The indicators targeted include comparative analysis of patent number, technology life cycle analysis, citation number analysis and patent classification number analysis. The content covers countries、enterprise and the technical level, and use the US Patent and Trademark Office patent database to perform blockchain search. In the analysis of patent output at the national level, the United States performed the best. At the manufacturer level, the number of patents obtained by IBM was the best. While the technical level mainly focused on IPC technology field G06Q/H04L/G06F. The research results can provide reference for follow-up researchers, Taiwanese companies and governments on Blockchain research, R&D innovation and policy formulation.
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