垂直电梯关键技术专利申请状况分析

Analysis of Patent Application Condition for Vertical Elevator Key Technology

分析了垂直电梯领域的专利文献,对申请量随时间的变化、申请人分布和垂直电梯关键技术分支分布进行了展示;并对比了国内外申请人申请态势、布局情况。为我国垂直电梯企业发展提供专利信息参考。

The patent documents of the field of vertical elevators is analyzed, and the changes in the number of applications over time, the distribution of applicants, and the distribution of key technologies of vertical elevators are showed; and the status and layout of applicants at home and abroad are compared. It aims at providing patent information reference to vertical elevator companies in China.