Patent citation is one of important indicators surveying technological innovation. By analyzing DII'S patent citations of two top enterprises Cisco and Huawei in communications equipments industry, their innovation and technology diffusion are explored. Results argue that through long-term innovation, the efficiency of some Chinese high-technological firms in R&D has caught up with that of some top multinationals; Technological diffusion of Chinese enterprises mainly distributes in domestic firms. Its technological internationalization just starts now and has the weak influence. And the multinational technological diffusion is global and has the strong influence; Technological innovation of the pursuing enterprise displays a awl-shaped distribution, and technological innovation of the advanced enterprise shows a dumbbell distribution; the distribution of technological innovation leads the direction of technological diffusion; The distribution width of technological innovation and diffusion for Chinese enterprises are widen, however, its top technologies are fewer, the technical specialization level is low, and multinational corporation has more superior technologies, its depth for technological innovation and diffusion is higher, and the degree of technical specialization is relatively high.
Key words
patent /
patent citation /
technological innovation /
technological diffusion
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