Abstract: This paper explores the development trends of air cleaner related technology for removing PM_2.5 by analysing the patents on the field.It chooses the patents collected from the abstract database of patents in China to study the patent layout of air cleaners in accordance with the following aspects: the patent application situation, the patent characteristics of important applicants, the patent development trend and so on.The analysis showed that application quantity of patent on the field increased rapidly from 2012. Although the technology began to develop two or three years before, the quantity of patent applications grows quickly and the technology has great potential.Technical constitution of the field was analysed by International Patent Classification (IPC).The research found that major technologies on the field were the filter and air-conditioning system.The analysis showed that most of the applicants were from China and the Chinese applicants take the dominance of the field in China.Colleges has more patents and the colleges focused on the key technology of the air purification.Enterprises involved the application of the technology in special electric apparatus.Domestic applicants in universities and institutes were much more than that in enterprises,so it was necessary to strengthen the cooperation between enterprises and academies and promote the industrialization of the core technology of the field.

Key words: gas, particle, absorption, PM_2.5, patent layout, patent analysis

摘要： 通过对针对去除PM_2.5的空气净化器的相关专利进行分析,探究相关技术的发展趋势。以中国专利文摘数据库中的针对去除PM_2.5的空气净化器相关专利为研究对象,分别从专利申请情况及申请人分布、主要申请人的专利特点、专利发展趋势等方面,研究了中国空气净化器技术的专利布局情况。通过分析得知,该领域的专利申请量从2012年开始出现了迅速增加,可见该领域是从近两三年才开始发展的,但申请量呈现加速上升的态势,具有很大的发展潜力。通过IPC 分类分析了该领域的技术构成,主要包括过滤、调节系统等。从申请人情况来看,申请人主要是国内申请人,占绝对的本土优势。其中,高校的申请占比较多,更侧重于空气净化的核心技术。企业的专利申请则更加侧重于与具体电器的结合。国内申请人主要集中在高校和研究院所,企业申请较少,建议企业和高校及研究院所加强合作,集各家之所长,以进一步推动高校和科研院所的核心技术应用到空气净化器的产业制造中。

关键词: 空气, 粒子, 吸收, PM_2.5, 专利布局, 专利分析