Abstract: Transgenic maize is one of the most important crops for genetically modified crops,and its genetically modified technology has certain representativeness. In order to give a better understand on the cooperation status of R&D institutions in this field,we constructed a framework to analyze the cooperation situation of patentees in the target technology field based on the patentees’ cooperation network. Based on the method and technology in Social Network Analysis,this paper took important patentees in the field of genetically modified technology in maize worldwide as the analysis objects,constructed a cooperation network,analyzed overall cooperation characteristics,detected cooperation subnets and explored important patentees in the field,which can objectively show the cooperation situation of the patentees from macro,meso and micro levels,and provide certain decision support for the strategic planning of science and technology.

Key words: genetically modified technology in maize, patentees, cooperation network, social network analysis