Analysis of Chinese CNC Machine tool Industry Based on Patent Intelligence

摘要

Based on patents collected by Derwent Innovation Index (DII) database from 1963-2009, this paper investigates and analysis the innovation status and development trends of Computer Numerical Control (CNC) machine tool technology in China through the quantitative analysis of patent distribution in the year, the hot R&D field and the company of China, Japan, US and Germany in hope of providing an objective statistic reference for future academic researches and innovation development.