Analysis of Chinese Patents with Bioenergy Technology

The China Patent Abstract Database was chosen; bioenergy technology patents between 1987 and 2012 were collected. Bioenergy technology patents were analyzed deeply from the total amount of patent applications, technology sub-class, and association analysis, respectively. IPC classification was employed to divide the patents into different categories and association analysis was adopted to discover the relations between technology fields. The patent trends of bioenergy technology were also discussed.