中文摘要：

按应用方向的不同，将纳米技术分为纳米材料与加工、纳米电子与器件、纳米生物与医药、纳米仪器与表征以及其他等5个市场领域，利用美国IsI德温特专利数据库收录的1991—2010年在中国范围内申请的纳米技术相关专利，通过主题检索方法获得了上述各领域的专利数据，基于这些专利数据，通过比较研究，分析了各领域纳米技术的研发进展，揭示了中国市场上纳米技术的分布与发展趋势，以期为政府、科研机构及企业制定纳米科技发展计划，开展相关技术研发等提供决策依据。

英文摘要：

According to the application, the nanotechnlolgy was divided into five nano markets of nano materials and process, nano electronics and devices, nano biology and medicine, nano instrument and measurement, and other nano techniques. Based on the patent data obtained by using the subject-searching method from the nanotechnology relat- ed patents applied in China from 1991 to 2010, collected by ISI＇s Derwent Innovation Index database, the distribu- tion and development trends of nanotechnology in China＇ s market were investigated, through the quantitative analy- sis of the patent distribution in the above-mentioned five nano markets, in hope of providing an objective statistic reference for future policy directions and academic researches.