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基于CNABS和DWPI数据库中收录的有关差分法车辆检测技术专利文献,对差分法车辆检测技术专利进行统计分析。本文主要包含以下四个方面:历年专利申请量、专利产出国分布、领域内重要申请人和差分法车辆检测技术分支。通过对该技术的专利进行分析,有助于提高申请人和审查员对差分法车辆检测现有技术的了解,从而便于车辆检测技术专利的申请和审查。
Based on the patent literature about differential detection vehicle detection technology contained in CNABS and DWPI database, the patent of differential detection vehicle detection technology is statistically analyzed. This paper mainly includes the following four aspects: the number of patent applications in the calendar year, the distribution of patent-producing countries, important applicants in the field and the branch testing technology of the differential method. By analyzing the patent of the technology, it helps to improve the applicants and examiners’ understanding of the prior art of the differential method vehicle testing so as to facilitate the application and examination of the patent for vehicle inspection technology.