脱氮除磷组合技术在美国的专利申请分析

Application Analysis of Nitrogen and Phosphorus Removal Combination Technology in U.S.

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。

Searches and statistical analysis are carried out for the patent applications of nitrogen and phosphorus removal combination technology submitted during 1998 and 2008 in the United States Patent and Trademark Bureau.This paper displays the time distribution,technical classification,applicant's nationality and applicant's type of the related applications from the quantitative point of view,and preliminarily analysis the application status of major applicants.The results indicate that the combination technology of nitrogen and phosphorus removal in the United States has entered the technical maturity,aerobic and anaerobic technologies are hotspots and growth points of this field.