Use stochastic frontier model to estimate the efficiency of patent output with Guangdong's data.
结合随机边缘模型进行估计专利产出效率，并以广东省地市数据在进行实证分析。
So it is very meaningful that researches how to use the patent resource and make the patent bring more economic efficiency.
因此，从战略角度就如何利用专利资源进行研究，使专利技术能够为企业带来更大经济效益，具有十分重要的意义。
6 patent of invention on main element-heater, Aluminium Die Casting, No creepage, anti-scale, heating efficiency is more than 99.97%.
核心发热体拥有6项国家发明专利，采用铝合金压铸一次成型，永不漏电，不结垢，热效率高达99.97%。
6 patent of invention on main element-heater, Aluminium Die Casting, No creepage, anti-scale, heating efficiency is more than 99.97%.
核心发热体拥有6项国家发明专利，采用铝合金压铸一次成型，永不漏电，不结垢，热效率高达99.97%。
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