利用现代网络技术和专利调研分析软件，对中国钢铁行业炼铁技术领域的专利申请进行了全面调研分析。分析了中国炼铁专利申请现状、发展趋势、技术热点，分析了国外来华申请情况并与中国申请情况作了比较，并提出了应予重视的几个问题。
In this paper, by using modern network technology and patent research and analysis software, the patent applications of blast furnace ironmaking in Chinese steel industry are investigated and analyzed comprehensively, in cluding the situation and trends of the Chinese blast furnace patent applications, and technology hot spots. The situ- ation of foreign applications is also analyzed and compared with that of domestic applications. Several problems which should be attached importance to are proposed.
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