Abstract: Based on Derwent Innovations Index(DII) of ISI WoK, patent analysis tools and platforms such as Thomson Data Analyzer(TDA) and Thomson Innovation(TI) etc. were used for deeply analyzing international patent of biomass energy, systematically and objectively revealing the present situation of research and development, the distribution of patent technology, research and development hotspot, as well as the competitive landscape of biomass energy technology. The results showed that the number of patents was increasing rapidly from 2005. China, American and Japan ranked the top 3 of the number of patents. However, by the comparison of average cited times of patent, the results showed that the quality of Chinese patents was poor. The patentees of top three were Guangzhou Devotion Thermal Technology Co., Sinopec Corp. and Tsinghua University. All of them came from China. The research and development hotspot of biomass energy technology were the boller, biodiesel reaction, ethanol production, gene modification and synthesis gas after 2010.

Key words: biomass energy, patent big data, patent analysis