螺杆膨胀机技术专利分析研究

Analysis of screw expander technology patent

螺杆膨胀机技术发展总体呈现上升态势,专利数量在2009-2012年取得了快速增长,美国、德国等西方国家在螺杆膨胀机专利技术上处于领先地位,中国螺杆膨胀机的技术研发快速发展并占有一席之地,但在核心专利技术的质量与比重上与美欧国家相比尚有一定差距。

The development of screw expander technology tends to be on the rise and the patent number quickly increased between 2009 and 2012. America and Germany occupy the leading position in the screw expander technology. The screw expander technology in China develops quickly and holds a space in this field, but there is a gap in the quality of core patent and ratio compared with America and Europe.