Research Trend and Technical Composition of Cannabis sativa Based on Patent Analysis

doi:10.13560/j.cnki.biotech.bull.1985.2018-0663

Abstract

Abstract: The objective of this work is to analyze the research trend and technical composition of Cannabis sativa-related patents from 1985 to 2017 in PatSnap database. We designed a suitable query formulation,moreover,translated and screened the retrieved patents manually or by more detailed logic strategy during searching. Results showed that the total number of applied C. sativa-related patents was 28 542,of which 24 521 were invention patents,7 565 were valid patents and 13 233 were invalid patents. The top 3 countries in the world by patent applications were China,the United States,and Germany;while the top 3 provinces in China were Jiangsu,Zhejiang and Shandong. The vast majority of inventions were in the hands of corporations,while universities owned few patent applications. The scope of patent protection related to C. sativa was mainly concentrated in such fields as medical,food,textile,building materials,etc. This analysis is conducive for China to promptly discovering technology blanks in C. sativa-related field and conducting research more scientifically.

Key words: Cannabis sativa L., PatSnap database, patent analysis

CHANG Li, DENG Xin, TANG Hui-juan, LI Jian-jun, HUANG Si-qi, CHEN An-guo, ZHANG Cui-ping, ZHAO Li-ning, LI De-fang. Research Trend and Technical Composition of Cannabis sativa Based on Patent Analysis[J]. Biotechnology Bulletin, 2018, 34(12): 195-201.

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