Nano/micro-electro mechanical systems: a patent view

Combining both bibliometrics and citation network analysis, this research evaluates the global development of micro-electro mechanical systems (MEMS) research based on the Derwent Innovations Index database. We found that worldwide, the growth trajectory of MEMS patents demonstrates an approximate S shape, with United States, Japan, China, and Korea leading the global MEMS race. Evidenced by Derwent class codes, the technology structure of global MEMS patents remains steady over time. Yet there does exist a national competitiveness component among the top country players. The latecomer China has become the second most prolific country filing MEMS patents, but its patent quality still lags behind the global average.

http://link.springer.com/article/10.1007/s11051-015-3273-1

Author(s): Guangyuan Hu and Weishu Liu
Organization(s): Shanghai University of Finance and Economics,Shanghai Jiao Tong University
Source: Journal of Nanoparticle Research
Year: 2015

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