The paper collected all Chinese patents after 1990 years related delayed coking technology, it respectively analysis from four aspects, it were the patent application change trend and the applicant statistics, patent technology field distribution and patent technical analysis, and concluded that for oil refining technology to provide information services and decision support.%文章收录了1990年以来延迟焦化技术相关的所有中国专利，对此分别从专利申请最变化趋势、申请人统计、专利技术领域分布及专利技术分析四个方面展开分析，并由此得出结论，为炼油技术提供信息服务和决策支持。
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