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针对1998-2008年间在美国专商局提交的有关污水脱氮除磷组合技术的专利申请进行了检索及统计分析,从量化角度展示了相关专利申请的年度分布状况、技术分类情况、申请人国别及类型,并对主要申请人的专利申请情况进行了初步分析。结果表明,污水脱氮除磷组合技术在美国已进入技术成熟期,好氧和厌氧是相关技术的热点和增长点。
A patent search and statistical analysis on the combined technology of wastewater denitrification and dephosphorization submitted by the U.S. Patent and Trademark Office during 1998-2008 were conducted. The annual distribution of the related patent applications, the technical classification and the classification of applicants Do not type, and a preliminary analysis of the patent application of the main applicant. The results show that the combination technology of wastewater denitrification and dephosphorization has entered the mature stage of technology in the United States. Aerobic and anaerobic technologies are the hot spots and the growth points of related technologies.