Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to EP20080157603 priority Critical patent/EP2131271A1/en Priority to EP08157603.5 priority Application filed by Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd Priority to PCT/JP2009/060400 priority patent/WO2009148172A1/en Publication of CN102057364A publication Critical patent/CN102057364A/zh Status Pending legal-status Critical Current Links Original Assignee Nippon Electric Co Ltd Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)