An empirical research on the field of wireless charging based on patent life length  

作　　者：施敏 Wang Juncheng Zhou Xiaodan Hu Yiyuan Zhao Zelong 

机构地区：[1]School of Information Management, Wuhan University, Wuhan 430072, P. R. China [2]Institute of Scientific and Technical Information of Guangxi, Nanning 530022, P. R. China [3]Institute of Scientific and Technical Information of China, Beijing 100038, P. R. China [4]School of Information Resource Management, Renmin University of China, Beijing 100872, P. R. China

出　　处：《High Technology Letters》2018年第1期95-102,共8页高技术通讯（英文版）

基　　金：Supported by the National Social Science Foundation of China(No.12CTQ025)

摘　　要：With the aid of patent life cycle theory,and from the perspective of patent life span,this paper choose the ‘times of citation-time sequence'data of patents as an observation index to research on related patents in the field of wireless charging by applying the adjusted ‘double-proportion'obsolescence method. The research reveals the rules of patent life span in the field of wireless charging,finding that the first 5 years since patents were authorized is the core period for the patents to play their full value,and also discovers the development law of merging technology patents.With the aid of patent life cycle theory,and from the perspective of patent life span,this paper choose the ‘times of citation-time sequence'data of patents as an observation index to research on related patents in the field of wireless charging by applying the adjusted ‘double-proportion'obsolescence method. The research reveals the rules of patent life span in the field of wireless charging,finding that the first 5 years since patents were authorized is the core period for the patents to play their full value,and also discovers the development law of merging technology patents.

关 键 词：LIFE SPAN of PATENT PATENT information 'double-proportion' OBSOLESCENCE method 

分 类 号：G306[文化科学] TM724[电气工程—电力系统及自动化]